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57085931897 = 233137929703
BaseRepresentation
bin110101001010100101…
…100011000101111001
312110100102020210210222
4311022211203011321
51413402444310042
642120325345425
74060433262221
oct651245430571
9173312223728
1057085931897
112223457a615
12b091b68275
1354c9b02037
142a97859081
1517419d52d2
hexd4a963179

57085931897 has 8 divisors (see below), whose sum is σ = 59758249344. Its totient is φ = 54429474528.

The previous prime is 57085931887. The next prime is 57085931941. The reversal of 57085931897 is 79813958075.

57085931897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57085931897 - 28 = 57085931641 is a prime.

It is a super-3 number, since 3×570859318973 (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57085931807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3957653 + ... + 3972050.

It is an arithmetic number, because the mean of its divisors is an integer number (7469781168).

Almost surely, 257085931897 is an apocalyptic number.

It is an amenable number.

57085931897 is a deficient number, since it is larger than the sum of its proper divisors (2672317447).

57085931897 is a wasteful number, since it uses less digits than its factorization.

57085931897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7930039.

The product of its (nonzero) digits is 19051200, while the sum is 62.

The spelling of 57085931897 in words is "fifty-seven billion, eighty-five million, nine hundred thirty-one thousand, eight hundred ninety-seven".

Divisors: 1 23 313 7199 7929703 182383169 2481997039 57085931897