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57145887008 = 257271513311
BaseRepresentation
bin110101001110001010…
…010000100100100000
312110111121001211202122
4311032022100210200
51414013321341013
642130310403412
74062062011400
oct651612204440
9173447054678
1057145887008
11222653aa7a1
12b0aa060568
135509364732
142aa17c4800
151746dc9a08
hexd4e290920

57145887008 has 72 divisors (see below), whose sum is σ = 132717844224. Its totient is φ = 24146102400.

The previous prime is 57145886953. The next prime is 57145887013. The reversal of 57145887008 is 80078854175.

It is a super-2 number, since 2×571458870082 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145328 + ... + 367983.

It is an arithmetic number, because the mean of its divisors is an integer number (1843303392).

Almost surely, 257145887008 is an apocalyptic number.

It is an amenable number.

57145887008 is an abundant number, since it is smaller than the sum of its proper divisors (75571957216).

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

57145887008 is a wasteful number, since it uses less digits than its factorization.

57145887008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513406 (or 513391 counting only the distinct ones).

The product of its (nonzero) digits is 2508800, while the sum is 53.

The spelling of 57145887008 in words is "fifty-seven billion, one hundred forty-five million, eight hundred eighty-seven thousand, eight".

Divisors: 1 2 4 7 8 14 16 28 32 49 56 71 98 112 142 196 224 284 392 497 568 784 994 1136 1568 1988 2272 3479 3976 6958 7952 13916 15904 27832 55664 111328 513311 1026622 2053244 3593177 4106488 7186354 8212976 14372708 16425952 25152239 28745416 36445081 50304478 57490832 72890162 100608956 114981664 145780324 201217912 255115567 291560648 402435824 510231134 583121296 804871648 1020462268 1166242592 1785808969 2040924536 3571617938 4081849072 7143235876 8163698144 14286471752 28572943504 57145887008