651320537496 has 32 divisors (see below), whose sum is σ = 1655899675200. Its totient is φ = 213427068320.

The previous prime is 651320537479. The next prime is 651320537531. The reversal of 651320537496 is 694735023156.

It is a happy number.

It is a congruent number.

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, 229984650 + ... + 229987481.

It is an arithmetic number, because the mean of its divisors is an integer number (51746864850).

Almost surely, 2^651320537496 is an apocalyptic number.

It is an amenable number.

651320537496 is an abundant number, since it is smaller than the sum of its proper divisors (1004579137704).

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

651320537496 is a wasteful number, since it uses less digits than its factorization.

651320537496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459972199 (or 459972195 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 51.

The spelling of 651320537496 in words is "six hundred fifty-one billion, three hundred twenty million, five hundred thirty-seven thousand, four hundred ninety-six".