18437557197696 has 768 divisors, whose sum is σ = 62012931840000. Its totient is φ = 4849437745152.

The previous prime is 18437557197679. The next prime is 18437557197701. The reversal of 18437557197696 is 69679175573481.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10306067970 + ... + 10306069758.

It is an arithmetic number, because the mean of its divisors is an integer number (80746005000).

Almost surely, 2^{18437557197696} is an apocalyptic number.

18437557197696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18437557197696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31006465920000).

18437557197696 is an abundant number, since it is smaller than the sum of its proper divisors (43575374642304).

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

18437557197696 is a wasteful number, since it uses less digits than its factorization.

18437557197696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2316 (or 2277 counting only the distinct ones).

The product of its digits is 2400451200, while the sum is 78.

The spelling of 18437557197696 in words is "eighteen trillion, four hundred thirty-seven billion, five hundred fifty-seven million, one hundred ninety-seven thousand, six hundred ninety-six".