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18687760480130 = 257318641996629
BaseRepresentation
bin1000011111111000101010…
…10100110011011110000010
32110011112101011022000120212
410033330111110303132002
54422140013140331010
6103425012203034122
73636101061110630
oct417742524633602
973145334260525
1018687760480130
115a55486669475
12211999120b942
13a5732c541661
144886c7346350
152261a167b505
hex10ff15533782

18687760480130 has 64 divisors (see below), whose sum is σ = 39688134727680. Its totient is φ = 6199823462400.

The previous prime is 18687760480057. The next prime is 18687760480133. The reversal of 18687760480130 is 3108406778681.

It is a self number, because there is not a number n which added to its sum of digits gives 18687760480130.

It is not an unprimeable number, because it can be changed into a prime (18687760480133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18252656 + ... + 19249284.

It is an arithmetic number, because the mean of its divisors is an integer number (620127105120).

Almost surely, 218687760480130 is an apocalyptic number.

18687760480130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18687760480130 is an abundant number, since it is smaller than the sum of its proper divisors (21000374247550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18687760480130 is a wasteful number, since it uses less digits than its factorization.

18687760480130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005315.

The product of its (nonzero) digits is 10838016, while the sum is 59.

The spelling of 18687760480130 in words is "eighteen trillion, six hundred eighty-seven billion, seven hundred sixty million, four hundred eighty thousand, one hundred thirty".

Divisors: 1 2 5 7 10 14 31 35 62 70 155 217 310 434 1085 2170 8641 17282 43205 60487 86410 120974 267871 302435 535742 604870 996629 1339355 1875097 1993258 2678710 3750194 4983145 6976403 9375485 9966290 13952806 18750970 30895499 34882015 61790998 69764030 154477495 216268493 308954990 432536986 1081342465 2162684930 8611871189 17223742378 43059355945 60283098323 86118711890 120566196646 266968006859 301415491615 533936013718 602830983230 1334840034295 1868776048013 2669680068590 3737552096026 9343880240065 18687760480130