628642030640 has 40 divisors (see below), whose sum is σ = 1574022933168. Its totient is φ = 232113980160.

The previous prime is 628642030633. The next prime is 628642030651. The reversal of 628642030640 is 46030246826.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302230706 + ... + 302232785.

Almost surely, 2^628642030640 is an apocalyptic number.

It is an amenable number.

628642030640 is an abundant number, since it is smaller than the sum of its proper divisors (945380902528).

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

628642030640 is a wasteful number, since it uses less digits than its factorization.

628642030640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604463517 (or 604463511 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 41.

The spelling of 628642030640 in words is "six hundred twenty-eight billion, six hundred forty-two million, thirty thousand, six hundred forty".