651512630256 has 40 divisors (see below), whose sum is σ = 1782078667344. Its totient is φ = 204396119040.

The previous prime is 651512630233. The next prime is 651512630257. The reversal of 651512630256 is 652036215156.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651512630257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399210355 + ... + 399211986.

Almost surely, 2^651512630256 is an apocalyptic number.

It is an amenable number.

651512630256 is an abundant number, since it is smaller than the sum of its proper divisors (1130566037088).

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

651512630256 is a wasteful number, since it uses less digits than its factorization.

651512630256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798422369 (or 798422363 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 651512630256 in words is "six hundred fifty-one billion, five hundred twelve million, six hundred thirty thousand, two hundred fifty-six".