628634919112 has 8 divisors (see below), whose sum is σ = 1178690473350. Its totient is φ = 314317459552.

The previous prime is 628634919053. The next prime is 628634919127. The reversal of 628634919112 is 211919436826.

It can be written as a sum of positive squares in only one way, i.e., 356282447236 + 272352471876 = 596894^2 + 521874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 628634919112.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39289682437 + ... + 39289682452.

Almost surely, 2^628634919112 is an apocalyptic number.

It is an amenable number.

628634919112 is a deficient number, since it is larger than the sum of its proper divisors (550055554238).

628634919112 is a wasteful number, since it uses less digits than its factorization.

628634919112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78579364895 (or 78579364891 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 52.

The spelling of 628634919112 in words is "six hundred twenty-eight billion, six hundred thirty-four million, nine hundred nineteen thousand, one hundred twelve".