651638977312 has 24 divisors (see below), whose sum is σ = 1287648254592. Its totient is φ = 324617198400.

The previous prime is 651638977307. The next prime is 651638977357. The reversal of 651638977312 is 213779836156.

651638977312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 37562764 + ... + 37580107.

It is an arithmetic number, because the mean of its divisors is an integer number (53652010608).

Almost surely, 2^651638977312 is an apocalyptic number.

It is an amenable number.

651638977312 is a deficient number, since it is larger than the sum of its proper divisors (636009277280).

651638977312 is a wasteful number, since it uses less digits than its factorization.

651638977312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75143152 (or 75143144 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 58.

The spelling of 651638977312 in words is "six hundred fifty-one billion, six hundred thirty-eight million, nine hundred seventy-seven thousand, three hundred twelve".