851880520500 has 96 divisors (see below), whose sum is σ = 2588531662080. Its totient is φ = 217291254400.

The previous prime is 851880520489. The next prime is 851880520529. The reversal of 851880520500 is 5025088158.

It is a congruent 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, 12311595 + ... + 12380594.

It is an arithmetic number, because the mean of its divisors is an integer number (26963871480).

Almost surely, 2^851880520500 is an apocalyptic number.

It is an amenable number.

851880520500 is an abundant number, since it is smaller than the sum of its proper divisors (1736651141580).

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

851880520500 is a wasteful number, since it uses less digits than its factorization.

851880520500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24692234 (or 24692222 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 42.

The spelling of 851880520500 in words is "eight hundred fifty-one billion, eight hundred eighty million, five hundred twenty thousand, five hundred".