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12608090538 = 2331103658111
BaseRepresentation
bin10111011111000000…
…00011000110101010
31012112200100100202020
423233200003012222
5201310132344123
65443031045310
7624304000311
oct135740030652
935480310666
1012608090538
11538aa3603a
12253a510836
13125c133b04
148786ad278
154dbd3a7e3
hex2ef8031aa

12608090538 has 32 divisors (see below), whose sum is σ = 26282360832. Its totient is φ = 4027633200.

The previous prime is 12608090503. The next prime is 12608090567. The reversal of 12608090538 is 83509080621.

It is a self number, because there is not a number n which added to its sum of digits gives 12608090538.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309898 + ... + 348213.

It is an arithmetic number, because the mean of its divisors is an integer number (821323776).

Almost surely, 212608090538 is an apocalyptic number.

12608090538 is an abundant number, since it is smaller than the sum of its proper divisors (13674270294).

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

12608090538 is a wasteful number, since it uses less digits than its factorization.

12608090538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658250.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 12608090538 in words is "twelve billion, six hundred eight million, ninety thousand, five hundred thirty-eight".

Divisors: 1 2 3 6 31 62 93 103 186 206 309 618 3193 6386 9579 19158 658111 1316222 1974333 3948666 20401441 40802882 61204323 67785433 122408646 135570866 203356299 406712598 2101348423 4202696846 6304045269 12608090538