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64357368912 = 2433148975391
BaseRepresentation
bin111011111011111111…
…111000010001010000
320011010011202002012000
4323323333320101100
52023300441301122
645322041434000
74435556416104
oct737377702120
9204104662160
1064357368912
11253260698a1
121058119b900
1360b8414ba5
143187471904
151a1a06a0ac
hexefbff8450

64357368912 has 40 divisors (see below), whose sum is σ = 184729486080. Its totient is φ = 21452456160.

The previous prime is 64357368821. The next prime is 64357368923. The reversal of 64357368912 is 21986375346.

64357368912 is a `hidden beast` number, since 6 + 4 + 3 + 573 + 68 + 9 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 74487264 + ... + 74488127.

It is an arithmetic number, because the mean of its divisors is an integer number (4618237152).

Almost surely, 264357368912 is an apocalyptic number.

It is an amenable number.

64357368912 is an abundant number, since it is smaller than the sum of its proper divisors (120372117168).

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

64357368912 is a wasteful number, since it uses less digits than its factorization.

64357368912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148975408 (or 148975396 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 64357368912 in words is "sixty-four billion, three hundred fifty-seven million, three hundred sixty-eight thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 148975391 297950782 446926173 595901564 893852346 1191803128 1340778519 1787704692 2383606256 2681557038 3575409384 4022335557 5363114076 7150818768 8044671114 10726228152 16089342228 21452456304 32178684456 64357368912