17947668904 has 32 divisors (see below), whose sum is σ = 36726431040. Its totient is φ = 8154633600.

The previous prime is 17947668901. The next prime is 17947669001. The reversal of 17947668904 is 40986674971.

It is a super-2 number, since 2×17947668904² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (17947668901) 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, 176389 + ... + 258859.

It is an arithmetic number, because the mean of its divisors is an integer number (1147700970).

Almost surely, 2^17947668904 is an apocalyptic number.

It is an amenable number.

17947668904 is an abundant number, since it is smaller than the sum of its proper divisors (18778762136).

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

17947668904 is a wasteful number, since it uses less digits than its factorization.

17947668904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84961 (or 84957 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 17947668904 in words is "seventeen billion, nine hundred forty-seven million, six hundred sixty-eight thousand, nine hundred four".