19979362944 has 48 divisors (see below), whose sum is σ = 57492701370. Its totient is φ = 6659787264.

The previous prime is 19979362943. The next prime is 19979362957. The reversal of 19979362944 is 44926397991.

It can be written as a sum of positive squares in only one way, i.e., 16100564544 + 3878798400 = 126888^2 + 62280^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (19979362943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8670447 + ... + 8672750.

Almost surely, 2^19979362944 is an apocalyptic number.

It is an amenable number.

19979362944 is an abundant number, since it is smaller than the sum of its proper divisors (37513338426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19979362944 is a wasteful number, since it uses less digits than its factorization.

19979362944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17343217 (or 17343202 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 63.

The spelling of 19979362944 in words is "nineteen billion, nine hundred seventy-nine million, three hundred sixty-two thousand, nine hundred forty-four".