18231380495040 has 112 divisors (see below), whose sum is σ = 58139632150272. Its totient is φ = 4840284220416.

The previous prime is 18231380495033. The next prime is 18231380495051. The reversal of 18231380495040 is 4059408313281.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41612524 + ... + 42048363.

Almost surely, 2^{18231380495040} is an apocalyptic number.

18231380495040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18231380495040 is an abundant number, since it is smaller than the sum of its proper divisors (39908251655232).

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

18231380495040 is a wasteful number, since it uses less digits than its factorization.

18231380495040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83661134 (or 83661124 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 48.

The spelling of 18231380495040 in words is "eighteen trillion, two hundred thirty-one billion, three hundred eighty million, four hundred ninety-five thousand, forty".