18471104813640 has 64 divisors (see below), whose sum is σ = 55467694900800. Its totient is φ = 4920794131712.

The previous prime is 18471104813563. The next prime is 18471104813657. The reversal of 18471104813640 is 4631840117481.

It is a self number, because there is not a number n which added to its sum of digits gives 18471104813640.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 75405627 + ... + 75650186.

It is an arithmetic number, because the mean of its divisors is an integer number (866682732825).

Almost surely, 2^{18471104813640} is an apocalyptic number.

18471104813640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18471104813640 is an abundant number, since it is smaller than the sum of its proper divisors (36996590087160).

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

18471104813640 is a wasteful number, since it uses less digits than its factorization.

18471104813640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151056846 (or 151056842 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 48.

The spelling of 18471104813640 in words is "eighteen trillion, four hundred seventy-one billion, one hundred four million, eight hundred thirteen thousand, six hundred forty".