651233460264 has 128 divisors (see below), whose sum is σ = 1710498384000. Its totient is φ = 206326923264.

The previous prime is 651233460257. The next prime is 651233460277. The reversal of 651233460264 is 462064332156.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88084152 + ... + 88091544.

It is an arithmetic number, because the mean of its divisors is an integer number (13363268625).

Almost surely, 2^651233460264 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 651233460264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855249192000).

651233460264 is an abundant number, since it is smaller than the sum of its proper divisors (1059264923736).

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

651233460264 is a wasteful number, since it uses less digits than its factorization.

651233460264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387 (or 9383 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 651233460264 in words is "six hundred fifty-one billion, two hundred thirty-three million, four hundred sixty thousand, two hundred sixty-four".