19175919972 has 24 divisors (see below), whose sum is σ = 48811432992. Its totient is φ = 5810884800.

The previous prime is 19175919967. The next prime is 19175919979. The reversal of 19175919972 is 27991957191.

It is not an unprimeable number, because it can be changed into a prime (19175919979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72635929 + ... + 72636192.

It is an arithmetic number, because the mean of its divisors is an integer number (2033809708).

Almost surely, 2^19175919972 is an apocalyptic number.

19175919972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19175919972 is an abundant number, since it is smaller than the sum of its proper divisors (29635513020).

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

19175919972 is a wasteful number, since it uses less digits than its factorization.

19175919972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145272139 (or 145272137 counting only the distinct ones).

The product of its digits is 3214890, while the sum is 60.

The spelling of 19175919972 in words is "nineteen billion, one hundred seventy-five million, nine hundred nineteen thousand, nine hundred seventy-two".