628667963816 has 32 divisors (see below), whose sum is σ = 1216828846080. Its totient is φ = 304181140800.

The previous prime is 628667963789. The next prime is 628667963851. The reversal of 628667963816 is 618369766826.

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, 8380025 + ... + 8454711.

It is an arithmetic number, because the mean of its divisors is an integer number (38025901440).

Almost surely, 2^628667963816 is an apocalyptic number.

It is an amenable number.

628667963816 is a deficient number, since it is larger than the sum of its proper divisors (588160882264).

628667963816 is a wasteful number, since it uses less digits than its factorization.

628667963816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108665 (or 108661 counting only the distinct ones).

The product of its digits is 188116992, while the sum is 68.

The spelling of 628667963816 in words is "six hundred twenty-eight billion, six hundred sixty-seven million, nine hundred sixty-three thousand, eight hundred sixteen".