19979257104 has 45 divisors (see below), whose sum is σ = 55918918263. Its totient is φ = 6659186976.

The previous prime is 19979257087. The next prime is 19979257121. The reversal of 19979257104 is 40175297991.

The square root of 19979257104 is 141348.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (19979257087) and next prime (19979257121).

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1690287 + ... + 1702065.

Almost surely, 2^19979257104 is an apocalyptic number.

19979257104 is the 141348-th square number.

It is an amenable number.

19979257104 is an abundant number, since it is smaller than the sum of its proper divisors (35939661159).

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

19979257104 is an frugal number, since it uses more digits than its factorization.

19979257104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23572 (or 11784 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The spelling of 19979257104 in words is "nineteen billion, nine hundred seventy-nine million, two hundred fifty-seven thousand, one hundred four".