18139445798562 has 48 divisors (see below), whose sum is σ = 43920786742560. Its totient is φ = 5362733419200.

The previous prime is 18139445798549. The next prime is 18139445798563. The reversal of 18139445798562 is 26589754493181.

18139445798562 is a `hidden beast` number, since 1 + 8 + 1 + 3 + 9 + 4 + 4 + 57 + 9 + 8 + 562 = 666.

It is not an unprimeable number, because it can be changed into a prime (18139445798563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1117228012 + ... + 1117244247.

It is an arithmetic number, because the mean of its divisors is an integer number (915016390470).

Almost surely, 2^{18139445798562} is an apocalyptic number.

18139445798562 is an abundant number, since it is smaller than the sum of its proper divisors (25781340943998).

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

18139445798562 is a wasteful number, since it uses less digits than its factorization.

18139445798562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2234472319 (or 2234472316 counting only the distinct ones).

The product of its digits is 522547200, while the sum is 72.

The spelling of 18139445798562 in words is "eighteen trillion, one hundred thirty-nine billion, four hundred forty-five million, seven hundred ninety-eight thousand, five hundred sixty-two".