17947668495 has 16 divisors (see below), whose sum is σ = 28808612352. Its totient is φ = 9541308960.

The previous prime is 17947668467. The next prime is 17947668517. The reversal of 17947668495 is 59486674971.

It is not a de Polignac number, because 17947668495 - 2⁷ = 17947668367 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1918987 + ... + 1928316.

It is an arithmetic number, because the mean of its divisors is an integer number (1800538272).

Almost surely, 2^17947668495 is an apocalyptic number.

17947668495 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

17947668495 is a deficient number, since it is larger than the sum of its proper divisors (10860943857).

17947668495 is a wasteful number, since it uses less digits than its factorization.

17947668495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3847622.

The product of its digits is 91445760, while the sum is 66.

The spelling of 17947668495 in words is "seventeen billion, nine hundred forty-seven million, six hundred sixty-eight thousand, four hundred ninety-five".