18486851977536 has 112 divisors (see below), whose sum is σ = 51833059656000. Its totient is φ = 5798772191232.

The previous prime is 18486851977421. The next prime is 18486851977541. The reversal of 18486851977536 is 63577915868481.

It is a congruent number.

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, 16462045 + ... + 17549148.

It is an arithmetic number, because the mean of its divisors is an integer number (462795175500).

Almost surely, 2^{18486851977536} is an apocalyptic number.

18486851977536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18486851977536 is an abundant number, since it is smaller than the sum of its proper divisors (33346207678464).

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

18486851977536 is a wasteful number, since it uses less digits than its factorization.

18486851977536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34011376 (or 34011366 counting only the distinct ones).

The product of its digits is 2438553600, while the sum is 78.

The spelling of 18486851977536 in words is "eighteen trillion, four hundred eighty-six billion, eight hundred fifty-one million, nine hundred seventy-seven thousand, five hundred thirty-six".