18517004106240 has 80 divisors (see below), whose sum is σ = 59196547526688. Its totient is φ = 4937867759616.

The previous prime is 18517004106221. The next prime is 18517004106247. The reversal of 18517004106240 is 4260140071581.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (18517004106247) 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, 1205526442 + ... + 1205541801.

Almost surely, 2^{18517004106240} is an apocalyptic number.

18517004106240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18517004106240 is an abundant number, since it is smaller than the sum of its proper divisors (40679543420448).

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

18517004106240 is an equidigital number, since it uses as much as digits as its factorization.

18517004106240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411068269 (or 2411068253 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 18517004106240 in words is "eighteen trillion, five hundred seventeen billion, four million, one hundred six thousand, two hundred forty".