628859168644 has 48 divisors (see below), whose sum is σ = 1269788026752. Its totient is φ = 266925964032.

The previous prime is 628859168621. The next prime is 628859168671. The reversal of 628859168644 is 446861958826.

628859168644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 628859168644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13149544 + ... + 13197280.

It is an arithmetic number, because the mean of its divisors is an integer number (26453917224).

Almost surely, 2^628859168644 is an apocalyptic number.

It is an amenable number.

628859168644 is an abundant number, since it is smaller than the sum of its proper divisors (640928858108).

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

628859168644 is a wasteful number, since it uses less digits than its factorization.

628859168644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52252 (or 52250 counting only the distinct ones).

The product of its digits is 159252480, while the sum is 67.

The spelling of 628859168644 in words is "six hundred twenty-eight billion, eight hundred fifty-nine million, one hundred sixty-eight thousand, six hundred forty-four".