870835172457 has 16 divisors (see below), whose sum is σ = 1173936153600. Its totient is φ = 574180426512.

The previous prime is 870835172453. The next prime is 870835172509. The reversal of 870835172457 is 754271538078.

It is not a de Polignac number, because 870835172457 - 2² = 870835172453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 870835172397 and 870835172406.

It is not an unprimeable number, because it can be changed into a prime (870835172453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4267623 + ... + 4467020.

It is an arithmetic number, because the mean of its divisors is an integer number (73371009600).

Almost surely, 2^870835172457 is an apocalyptic number.

It is an amenable number.

870835172457 is a deficient number, since it is larger than the sum of its proper divisors (303100981143).

870835172457 is a wasteful number, since it uses less digits than its factorization.

870835172457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8735012.

The product of its (nonzero) digits is 13171200, while the sum is 57.

The spelling of 870835172457 in words is "eight hundred seventy billion, eight hundred thirty-five million, one hundred seventy-two thousand, four hundred fifty-seven".