651520962432 has 384 divisors, whose sum is σ = 2062994300640. Its totient is φ = 203965267968.

The previous prime is 651520962401. The next prime is 651520962451. The reversal of 651520962432 is 234269025156.

651520962432 is a `hidden beast` number, since 6 + 5 + 1 + 5 + 209 + 6 + 2 + 432 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 326248858 + ... + 326250854.

Almost surely, 2^651520962432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 651520962432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031497150320).

651520962432 is an abundant number, since it is smaller than the sum of its proper divisors (1411473338208).

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

651520962432 is a wasteful number, since it uses less digits than its factorization.

651520962432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660 (or 2636 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

Adding to 651520962432 its reverse (234269025156), we get a palindrome (885789987588).

The spelling of 651520962432 in words is "six hundred fifty-one billion, five hundred twenty million, nine hundred sixty-two thousand, four hundred thirty-two".