17947668912 has 40 divisors (see below), whose sum is σ = 47351302656. Its totient is φ = 5855267136.

The previous prime is 17947668901. The next prime is 17947669001. The reversal of 17947668912 is 21986674971.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3975508 + ... + 3980019.

Almost surely, 2^17947668912 is an apocalyptic number.

17947668912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17947668912 is an abundant number, since it is smaller than the sum of its proper divisors (29403633744).

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

17947668912 is a wasteful number, since it uses less digits than its factorization.

17947668912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7955585 (or 7955579 counting only the distinct ones).

The product of its digits is 9144576, while the sum is 60.

The spelling of 17947668912 in words is "seventeen billion, nine hundred forty-seven million, six hundred sixty-eight thousand, nine hundred twelve".