856255552658 has 16 divisors (see below), whose sum is σ = 1401212736000. Its totient is φ = 389188378800.

The previous prime is 856255552657. The next prime is 856255552673.

856255552658 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 856255552658.

It is not an unprimeable number, because it can be changed into a prime (856255552657) 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, 460658 + ... + 1387341.

It is an arithmetic number, because the mean of its divisors is an integer number (87575796000).

Almost surely, 2^856255552658 is an apocalyptic number.

856255552658 is a deficient number, since it is larger than the sum of its proper divisors (544957183342).

856255552658 is a wasteful number, since it uses less digits than its factorization.

856255552658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1869073.

The product of its digits is 144000000, while the sum is 62.

The spelling of 856255552658 in words is "eight hundred fifty-six billion, two hundred fifty-five million, five hundred fifty-two thousand, six hundred fifty-eight".