856220022658 has 32 divisors (see below), whose sum is σ = 1724415154560. Its totient is φ = 307931276160.

The previous prime is 856220022629. The next prime is 856220022673.

856220022658 is nontrivially palindromic in base 10.

856220022658 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×856220022658² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213839163 + ... + 213843166.

It is an arithmetic number, because the mean of its divisors is an integer number (53887973580).

Almost surely, 2^856220022658 is an apocalyptic number.

856220022658 is an abundant number, since it is smaller than the sum of its proper divisors (868195131902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856220022658 is a wasteful number, since it uses less digits than its factorization.

856220022658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427682362.

The product of its (nonzero) digits is 921600, while the sum is 46.

It can be divided in two parts, 8562200 and 22658, that added together give a palindrome (8584858).

The spelling of 856220022658 in words is "eight hundred fifty-six billion, two hundred twenty million, twenty-two thousand, six hundred fifty-eight".