19929982875 has 64 divisors (see below), whose sum is σ = 36283493376. Its totient is φ = 9634944000.

The previous prime is 19929982871. The next prime is 19929982879. The reversal of 19929982875 is 57828992991.

It is an interprime number because it is at equal distance from previous prime (19929982871) and next prime (19929982879).

It is not a de Polignac number, because 19929982875 - 2² = 19929982871 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19929982871) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1449282 + ... + 1462968.

It is an arithmetic number, because the mean of its divisors is an integer number (566929584).

Almost surely, 2^19929982875 is an apocalyptic number.

19929982875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19929982875 is a deficient number, since it is larger than the sum of its proper divisors (16353510501).

19929982875 is a wasteful number, since it uses less digits than its factorization.

19929982875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14069 (or 14059 counting only the distinct ones).

The product of its digits is 58786560, while the sum is 69.

The spelling of 19929982875 in words is "nineteen billion, nine hundred twenty-nine million, nine hundred eighty-two thousand, eight hundred seventy-five".