651721062372 has 24 divisors (see below), whose sum is σ = 1586799109056. Its totient is φ = 207795121248.

The previous prime is 651721062353. The next prime is 651721062389. The reversal of 651721062372 is 273260127156.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1180653823 + ... + 1180654374.

It is an arithmetic number, because the mean of its divisors is an integer number (66116629544).

Almost surely, 2^651721062372 is an apocalyptic number.

It is an amenable number.

651721062372 is an abundant number, since it is smaller than the sum of its proper divisors (935078046684).

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

651721062372 is a wasteful number, since it uses less digits than its factorization.

651721062372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361308227 (or 2361308225 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 651721062372 in words is "six hundred fifty-one billion, seven hundred twenty-one million, sixty-two thousand, three hundred seventy-two".