18031654998456 has 96 divisors (see below), whose sum is σ = 49558718605200. Its totient is φ = 5463153907200.

The previous prime is 18031654998451. The next prime is 18031654998479. The reversal of 18031654998456 is 65489945613081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18031654998451) 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 23 ways as a sum of consecutive naturals, for example, 15650940 + ... + 16763508.

Almost surely, 2^{18031654998456} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18031654998456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24779359302600).

18031654998456 is an abundant number, since it is smaller than the sum of its proper divisors (31527063606744).

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

18031654998456 is a wasteful number, since it uses less digits than its factorization.

18031654998456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118181 (or 1118166 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 69.

The spelling of 18031654998456 in words is "eighteen trillion, thirty-one billion, six hundred fifty-four million, nine hundred ninety-eight thousand, four hundred fifty-six".