628966265908 has 12 divisors (see below), whose sum is σ = 1121458719780. Its totient is φ = 308549488832.

The previous prime is 628966265887. The next prime is 628966265923. The reversal of 628966265908 is 809562669826.

It can be written as a sum of positive squares in 2 ways, for example, as 437645756304 + 191320509604 = 661548^2 + 437402^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1483410793 + ... + 1483411216.

It is an arithmetic number, because the mean of its divisors is an integer number (93454893315).

Almost surely, 2^628966265908 is an apocalyptic number.

It is an amenable number.

628966265908 is a deficient number, since it is larger than the sum of its proper divisors (492492453872).

628966265908 is a wasteful number, since it uses less digits than its factorization.

628966265908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2966822066 (or 2966822064 counting only the distinct ones).

The product of its (nonzero) digits is 134369280, while the sum is 67.

The spelling of 628966265908 in words is "six hundred twenty-eight billion, nine hundred sixty-six million, two hundred sixty-five thousand, nine hundred eight".