18531083888997 has 16 divisors (see below), whose sum is σ = 25283538020928. Its totient is φ = 12066361453440.

The previous prime is 18531083888969. The next prime is 18531083889001. The reversal of 18531083888997 is 79988838013581.

It is not a de Polignac number, because 18531083888997 - 2⁷ = 18531083888869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18531083888917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1698523 + ... + 6320375.

It is an arithmetic number, because the mean of its divisors is an integer number (1580221126308).

Almost surely, 2^{18531083888997} is an apocalyptic number.

It is an amenable number.

18531083888997 is a deficient number, since it is larger than the sum of its proper divisors (6752454131931).

18531083888997 is a wasteful number, since it uses less digits than its factorization.

18531083888997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4652980.

The product of its (nonzero) digits is 836075520, while the sum is 78.

The spelling of 18531083888997 in words is "eighteen trillion, five hundred thirty-one billion, eighty-three million, eight hundred eighty-eight thousand, nine hundred ninety-seven".