86256170057 has 4 divisors (see below), whose sum is σ = 86336859780. Its totient is φ = 86175480336.

The previous prime is 86256170051. The next prime is 86256170149. The reversal of 86256170057 is 75007165268.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22540818496 + 63715351561 = 150136^2 + 252419^2 .

It is a cyclic number.

It is not a de Polignac number, because 86256170057 - 2²⁰ = 86255121481 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86256169993 and 86256170020.

It is not an unprimeable number, because it can be changed into a prime (86256170051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40343258 + ... + 40345395.

It is an arithmetic number, because the mean of its divisors is an integer number (21584214945).

Almost surely, 2^86256170057 is an apocalyptic number.

It is an amenable number.

86256170057 is a deficient number, since it is larger than the sum of its proper divisors (80689723).

86256170057 is a wasteful number, since it uses less digits than its factorization.

86256170057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80689722.

The product of its (nonzero) digits is 705600, while the sum is 47.

The spelling of 86256170057 in words is "eighty-six billion, two hundred fifty-six million, one hundred seventy thousand, fifty-seven".