851513242272 has 96 divisors (see below), whose sum is σ = 2786770635264. Its totient is φ = 221172268800.

The previous prime is 851513242243. The next prime is 851513242291. The reversal of 851513242272 is 272242315158.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 57589554 + ... + 57604337.

It is an arithmetic number, because the mean of its divisors is an integer number (29028860784).

Almost surely, 2^851513242272 is an apocalyptic number.

It is an amenable number.

851513242272 is an abundant number, since it is smaller than the sum of its proper divisors (1935257392992).

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

851513242272 is a wasteful number, since it uses less digits than its factorization.

851513242272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115193922 (or 115193914 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The spelling of 851513242272 in words is "eight hundred fifty-one billion, five hundred thirteen million, two hundred forty-two thousand, two hundred seventy-two".