651167391372 has 12 divisors (see below), whose sum is σ = 1519390579896. Its totient is φ = 217055797120.

The previous prime is 651167391361. The next prime is 651167391389. The reversal of 651167391372 is 273193761156.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27131974629 + ... + 27131974652.

It is an arithmetic number, because the mean of its divisors is an integer number (126615881658).

Almost surely, 2^651167391372 is an apocalyptic number.

It is an amenable number.

651167391372 is an abundant number, since it is smaller than the sum of its proper divisors (868223188524).

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

651167391372 is a wasteful number, since it uses less digits than its factorization.

651167391372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54263949288 (or 54263949286 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 51.

The spelling of 651167391372 in words is "six hundred fifty-one billion, one hundred sixty-seven million, three hundred ninety-one thousand, three hundred seventy-two".