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18764834902912 = 27720942896097
BaseRepresentation
bin1000100010001000001110…
…10100011001001110000000
32110102220022121102101010001
410101010013110121032000
54424420340213343122
6103524240211245344
73644500046643610
oct421040724311600
973386277371101
1018764834902912
115a8513811703a
1221309012a9854
13a6169351b897
1448c31972ca40
152281b2da7527
hex111107519380

18764834902912 has 32 divisors (see below), whose sum is σ = 42723508039920. Its totient is φ = 8042072100864.

The previous prime is 18764834902871. The next prime is 18764834902921. The reversal of 18764834902912 is 21920943846781.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10471447153 + ... + 10471448944.

Almost surely, 218764834902912 is an apocalyptic number.

It is an amenable number.

18764834902912 is an abundant number, since it is smaller than the sum of its proper divisors (23958673137008).

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

18764834902912 is an equidigital number, since it uses as much as digits as its factorization.

18764834902912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20942896118 (or 20942896106 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 64.

The spelling of 18764834902912 in words is "eighteen trillion, seven hundred sixty-four billion, eight hundred thirty-four million, nine hundred two thousand, nine hundred twelve".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 224 448 896 20942896097 41885792194 83771584388 146600272679 167543168776 293200545358 335086337552 586401090716 670172675104 1172802181432 1340345350208 2345604362864 2680690700416 4691208725728 9382417451456 18764834902912