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57145607131 = 643858110357
BaseRepresentation
bin110101001110001001…
…001100001111011011
312110111120112121211211
4311032021030033123
51414013233412011
642130300403551
74062056434414
oct651611141733
9173446477754
1057145607131
1122265229498
12b0a9b465b7
135509297222
142aa175080b
151746d71b21
hexd4e24c3db

57145607131 has 8 divisors (see below), whose sum is σ = 57246677264. Its totient is φ = 57044576160.

The previous prime is 57145607119. The next prime is 57145607147. The reversal of 57145607131 is 13170654175.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57145607131 - 29 = 57145606619 is a prime.

It is a super-2 number, since 2×571456071312 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57145605131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5512405 + ... + 5522761.

It is an arithmetic number, because the mean of its divisors is an integer number (7155834658).

Almost surely, 257145607131 is an apocalyptic number.

57145607131 is a deficient number, since it is larger than the sum of its proper divisors (101070133).

57145607131 is a wasteful number, since it uses less digits than its factorization.

57145607131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19581.

The product of its (nonzero) digits is 88200, while the sum is 40.

The spelling of 57145607131 in words is "fifty-seven billion, one hundred forty-five million, six hundred seven thousand, one hundred thirty-one".

Divisors: 1 643 8581 10357 5517583 6659551 88873417 57145607131