17947668913 has 8 divisors (see below), whose sum is σ = 18733635648. Its totient is φ = 17162171664.

The previous prime is 17947668901. The next prime is 17947669001. The reversal of 17947668913 is 31986674971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17947668913 - 2¹³ = 17947660721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17947668313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38095 + ... + 193252.

It is an arithmetic number, because the mean of its divisors is an integer number (2341704456).

Almost surely, 2^17947668913 is an apocalyptic number.

It is an amenable number.

17947668913 is a deficient number, since it is larger than the sum of its proper divisors (785966735).

17947668913 is a wasteful number, since it uses less digits than its factorization.

17947668913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234743.

The product of its digits is 13716864, while the sum is 61.

The spelling of 17947668913 in words is "seventeen billion, nine hundred forty-seven million, six hundred sixty-eight thousand, nine hundred thirteen".