856373502210 has 64 divisors (see below), whose sum is σ = 2163647617920. Its totient is φ = 216329218560.

The previous prime is 856373502161. The next prime is 856373502263. The reversal of 856373502210 is 12205373658.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7750150 + ... + 7859870.

It is an arithmetic number, because the mean of its divisors is an integer number (33806994030).

Almost surely, 2^856373502210 is an apocalyptic number.

856373502210 is an abundant number, since it is smaller than the sum of its proper divisors (1307274115710).

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

856373502210 is a wasteful number, since it uses less digits than its factorization.

856373502210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123443.

The product of its (nonzero) digits is 302400, while the sum is 42.

Adding to 856373502210 its reverse (12205373658), we get a palindrome (868578875868).

The spelling of 856373502210 in words is "eight hundred fifty-six billion, three hundred seventy-three million, five hundred two thousand, two hundred ten".