627666619138 has 32 divisors (see below), whose sum is σ = 1094489625600. Its totient is φ = 267541893696.

The previous prime is 627666619133. The next prime is 627666619141. The reversal of 627666619138 is 831916666726.

It is not an unprimeable number, because it can be changed into a prime (627666619133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18079378 + ... + 18114061.

It is an arithmetic number, because the mean of its divisors is an integer number (34202800800).

Almost surely, 2^627666619138 is an apocalyptic number.

627666619138 is a deficient number, since it is larger than the sum of its proper divisors (466823006462).

627666619138 is a wasteful number, since it uses less digits than its factorization.

627666619138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36193506.

The product of its digits is 23514624, while the sum is 61.

The spelling of 627666619138 in words is "six hundred twenty-seven billion, six hundred sixty-six million, six hundred nineteen thousand, one hundred thirty-eight".