19937677264 has 10 divisors (see below), whose sum is σ = 38629249730. Its totient is φ = 9968838624.

The previous prime is 19937677223. The next prime is 19937677271. The reversal of 19937677264 is 46277673991.

It can be written as a sum of positive squares in only one way, i.e., 19935180864 + 2496400 = 141192^2 + 1580^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623052399 + ... + 623052430.

It is an arithmetic number, because the mean of its divisors is an integer number (3862924973).

Almost surely, 2^19937677264 is an apocalyptic number.

It is an amenable number.

19937677264 is a deficient number, since it is larger than the sum of its proper divisors (18691572466).

19937677264 is a wasteful number, since it uses less digits than its factorization.

19937677264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246104837 (or 1246104831 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 61.

The spelling of 19937677264 in words is "nineteen billion, nine hundred thirty-seven million, six hundred seventy-seven thousand, two hundred sixty-four".