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18182010201020 = 2251402964801519
BaseRepresentation
bin1000010001001010101000…
…10000100110001110111100
32101101011221112220212022222
410020211110100212032330
54340343224102413040
6102400411123224512
73554415106503161
oct410452420461674
971334845825288
1018182010201020
11587aa46833196
122057966518138
13a1b72cca0483
1446c02a55a068
15217e50cdbbb5
hex1089544263bc

18182010201020 has 24 divisors (see below), whose sum is σ = 38184943675200. Its totient is φ = 7272285556032.

The previous prime is 18182010200989. The next prime is 18182010201037. The reversal of 18182010201020 is 2010201028181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32120180 + ... + 32681339.

It is an arithmetic number, because the mean of its divisors is an integer number (1591039319800).

Almost surely, 218182010201020 is an apocalyptic number.

18182010201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18182010201020 is an abundant number, since it is smaller than the sum of its proper divisors (20002933474180).

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

18182010201020 is a wasteful number, since it uses less digits than its factorization.

18182010201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64815557 (or 64815555 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 26.

The spelling of 18182010201020 in words is "eighteen trillion, one hundred eighty-two billion, ten million, two hundred one thousand, twenty".

Divisors: 1 2 4 5 10 20 14029 28058 56116 70145 140290 280580 64801519 129603038 259206076 324007595 648015190 1296030380 909100510051 1818201020102 3636402040204 4545502550255 9091005100510 18182010201020