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57457438431 = 3236911205089
BaseRepresentation
bin110101100000101110…
…101110111011011111
312111022022022021222020
4311200232232323133
51420133101012211
642221240151223
74102564111521
oct654056567337
9174268267866
1057457438431
1122405253a08
12b176468513
135558a782a3
142ad0d23a11
15176441b306
hexd60baeedf

57457438431 has 16 divisors (see below), whose sum is σ = 80056538880. Its totient is φ = 36586471680.

The previous prime is 57457438403. The next prime is 57457438439. The reversal of 57457438431 is 13483475475.

It is not a de Polignac number, because 57457438431 - 27 = 57457438303 is a prime.

It is a super-2 number, since 2×574574384312 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57457438439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 554866 + ... + 650223.

It is an arithmetic number, because the mean of its divisors is an integer number (5003533680).

Almost surely, 257457438431 is an apocalyptic number.

57457438431 is a deficient number, since it is larger than the sum of its proper divisors (22599100449).

57457438431 is a wasteful number, since it uses less digits than its factorization.

57457438431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205806.

The product of its digits is 5644800, while the sum is 51.

The spelling of 57457438431 in words is "fifty-seven billion, four hundred fifty-seven million, four hundred thirty-eight thousand, four hundred thirty-one".

Divisors: 1 3 23 69 691 2073 15893 47679 1205089 3615267 27717047 83151141 832716499 2498149497 19152479477 57457438431