19713267972 has 48 divisors (see below), whose sum is σ = 51120780480. Its totient is φ = 6569506944.

The previous prime is 19713267941. The next prime is 19713267989. The reversal of 19713267972 is 27976231791.

It is a super-2 number, since 2×19713267972² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481788 + ... + 521100.

It is an arithmetic number, because the mean of its divisors is an integer number (1065016260).

Almost surely, 2^19713267972 is an apocalyptic number.

19713267972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19713267972 is an abundant number, since it is smaller than the sum of its proper divisors (31407512508).

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

19713267972 is a wasteful number, since it uses less digits than its factorization.

19713267972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43969 (or 43961 counting only the distinct ones).

The product of its digits is 2000376, while the sum is 54.

The spelling of 19713267972 in words is "nineteen billion, seven hundred thirteen million, two hundred sixty-seven thousand, nine hundred seventy-two".