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56875964688 = 2432394971977
BaseRepresentation
bin110100111110000100…
…100101100100010000
312102210210011100221200
4310332010211210100
51412440221332223
642043425151200
74052303503014
oct647604454420
9172723140850
1056875964688
1122136aaa0a4
12b03378b500
13549546809a
142a77a00544
15172d35ca43
hexd3e125910

56875964688 has 30 divisors (see below), whose sum is σ = 159173707134. Its totient is φ = 18958654848.

The previous prime is 56875964681. The next prime is 56875964693. The reversal of 56875964688 is 88646957865.

It is a happy number.

56875964688 is a `hidden beast` number, since 5 + 6 + 8 + 75 + 96 + 468 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 56802142224 + 73822464 = 238332^2 + 8592^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (56875964681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197485845 + ... + 197486132.

Almost surely, 256875964688 is an apocalyptic number.

It is an amenable number.

56875964688 is an abundant number, since it is smaller than the sum of its proper divisors (102297742446).

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

56875964688 is a wasteful number, since it uses less digits than its factorization.

56875964688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394971991 (or 394971982 counting only the distinct ones).

The product of its digits is 696729600, while the sum is 72.

The spelling of 56875964688 in words is "fifty-six billion, eight hundred seventy-five million, nine hundred sixty-four thousand, six hundred eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 394971977 789943954 1184915931 1579887908 2369831862 3159775816 3554747793 4739663724 6319551632 7109495586 9479327448 14218991172 18958654896 28437982344 56875964688