18464809212542 has 64 divisors (see below), whose sum is σ = 36786984192000. Its totient is φ = 6733331750880.

The previous prime is 18464809212511. The next prime is 18464809212601. The reversal of 18464809212542 is 24521290846481.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 37772792 + ... + 38258507.

It is an arithmetic number, because the mean of its divisors is an integer number (574796628000).

Almost surely, 2^{18464809212542} is an apocalyptic number.

18464809212542 is a deficient number, since it is larger than the sum of its proper divisors (18322174979458).

18464809212542 is a wasteful number, since it uses less digits than its factorization.

18464809212542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76031421.

The product of its (nonzero) digits is 8847360, while the sum is 56.

The spelling of 18464809212542 in words is "eighteen trillion, four hundred sixty-four billion, eight hundred nine million, two hundred twelve thousand, five hundred forty-two".