856817122300 has 36 divisors (see below), whose sum is σ = 1871135821240. Its totient is φ = 340543869120.

The previous prime is 856817122289. The next prime is 856817122331. The reversal of 856817122300 is 3221718658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27271470 + ... + 27302869.

Almost surely, 2^856817122300 is an apocalyptic number.

It is an amenable number.

856817122300 is an abundant number, since it is smaller than the sum of its proper divisors (1014318698940).

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

856817122300 is a wasteful number, since it uses less digits than its factorization.

856817122300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54574510 (or 54574503 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The spelling of 856817122300 in words is "eight hundred fifty-six billion, eight hundred seventeen million, one hundred twenty-two thousand, three hundred".