646300515364 has 36 divisors (see below), whose sum is σ = 1347773042700. Its totient is φ = 270230177280.

The previous prime is 646300515353. The next prime is 646300515379. The reversal of 646300515364 is 463515003646.

It can be written as a sum of positive squares in 2 ways, for example, as 392326849600 + 253973665764 = 626360^2 + 503958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 646300515364.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40204789 + ... + 40220860.

It is an arithmetic number, because the mean of its divisors is an integer number (37438140075).

Almost surely, 2^646300515364 is an apocalyptic number.

It is an amenable number.

646300515364 is an abundant number, since it is smaller than the sum of its proper divisors (701472527336).

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

646300515364 is a wasteful number, since it uses less digits than its factorization.

646300515364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80425708 (or 80425699 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 646300515364 in words is "six hundred forty-six billion, three hundred million, five hundred fifteen thousand, three hundred sixty-four".