651513937764 has 24 divisors (see below), whose sum is σ = 1520254133440. Its totient is φ = 217163463264.

The previous prime is 651513937733. The next prime is 651513937801. The reversal of 651513937764 is 467739315156.

It is a super-2 number, since 2×651513937764² (a number of 24 digits) contains 22 as substring.

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, 630304 + ... + 1303959.

Almost surely, 2^651513937764 is an apocalyptic number.

It is an amenable number.

651513937764 is an abundant number, since it is smaller than the sum of its proper divisors (868740195676).

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

651513937764 is a wasteful number, since it uses less digits than its factorization.

651513937764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962339 (or 1962337 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 57.

The spelling of 651513937764 in words is "six hundred fifty-one billion, five hundred thirteen million, nine hundred thirty-seven thousand, seven hundred sixty-four".