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80704351854 = 23271933711091
BaseRepresentation
bin100101100101001011…
…0101010111001101110
321201022102110212002200
41023022112222321232
52310240303224404
6101024114202330
75554633446360
oct1131226527156
9251272425080
1080704351854
1131254559055
12137838833a6
1377c2038c69
143c98526d30
152175250839
hex12ca5aae6e

80704351854 has 48 divisors (see below), whose sum is σ = 210357214080. Its totient is φ = 21844786320.

The previous prime is 80704351841. The next prime is 80704351951. The reversal of 80704351854 is 45815340708.

80704351854 is a `hidden beast` number, since 80 + 7 + 0 + 4 + 3 + 518 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16853152 + ... + 16857939.

It is an arithmetic number, because the mean of its divisors is an integer number (4382441960).

Almost surely, 280704351854 is an apocalyptic number.

80704351854 is an abundant number, since it is smaller than the sum of its proper divisors (129652862226).

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

80704351854 is a wasteful number, since it uses less digits than its factorization.

80704351854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33711125 (or 33711122 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 80704351854 in words is "eighty billion, seven hundred four million, three hundred fifty-one thousand, eight hundred fifty-four".

Divisors: 1 2 3 6 7 9 14 18 19 21 38 42 57 63 114 126 133 171 266 342 399 798 1197 2394 33711091 67422182 101133273 202266546 235977637 303399819 471955274 606799638 640510729 707932911 1281021458 1415865822 1921532187 2123798733 3843064374 4247597466 4483575103 5764596561 8967150206 11529193122 13450725309 26901450618 40352175927 80704351854