19108776972 has 12 divisors (see below), whose sum is σ = 44587146296. Its totient is φ = 6369592320.

The previous prime is 19108776961. The next prime is 19108776983. The reversal of 19108776972 is 27967780191.

It is an interprime number because it is at equal distance from previous prime (19108776961) and next prime (19108776983).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 796199029 + ... + 796199052.

Almost surely, 2^19108776972 is an apocalyptic number.

19108776972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19108776972 is an abundant number, since it is smaller than the sum of its proper divisors (25478369324).

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

19108776972 is a wasteful number, since it uses less digits than its factorization.

19108776972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592398088 (or 1592398086 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 57.

The spelling of 19108776972 in words is "nineteen billion, one hundred eight million, seven hundred seventy-six thousand, nine hundred seventy-two".