859191372057 has 16 divisors (see below), whose sum is σ = 1172595948480. Its totient is φ = 559298836992.

The previous prime is 859191372019. The next prime is 859191372107. The reversal of 859191372057 is 750273191958.

It is not a de Polignac number, because 859191372057 - 2²² = 859187177753 is a prime.

It is a super-2 number, since 2×859191372057² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 859191371988 and 859191372006.

It is not an unprimeable number, because it can be changed into a prime (859191372757) 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 15 ways as a sum of consecutive naturals, for example, 623808 + ... + 1451729.

It is an arithmetic number, because the mean of its divisors is an integer number (73287246780).

Almost surely, 2^859191372057 is an apocalyptic number.

It is an amenable number.

859191372057 is a deficient number, since it is larger than the sum of its proper divisors (313404576423).

859191372057 is a wasteful number, since it uses less digits than its factorization.

859191372057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078792.

The product of its (nonzero) digits is 4762800, while the sum is 57.

The spelling of 859191372057 in words is "eight hundred fifty-nine billion, one hundred ninety-one million, three hundred seventy-two thousand, fifty-seven".