651005056008 has 24 divisors (see below), whose sum is σ = 1763138693550. Its totient is φ = 217001685312.

The previous prime is 651005055997. The next prime is 651005056027. The reversal of 651005056008 is 800650500156.

It can be written as a sum of positive squares in only one way, i.e., 649284631524 + 1720424484 = 805782^2 + 41478^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4520868373 + ... + 4520868516.

Almost surely, 2^651005056008 is an apocalyptic number.

It is an amenable number.

651005056008 is an abundant number, since it is smaller than the sum of its proper divisors (1112133637542).

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

651005056008 is a wasteful number, since it uses less digits than its factorization.

651005056008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9041736901 (or 9041736894 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The spelling of 651005056008 in words is "six hundred fifty-one billion, five million, fifty-six thousand, eight".