18429064544 has 24 divisors (see below), whose sum is σ = 39580605288. Its totient is φ = 8376847360.

The previous prime is 18429064529. The next prime is 18429064561. The reversal of 18429064544 is 44546092481.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26177297 + ... + 26178000.

It is an arithmetic number, because the mean of its divisors is an integer number (1649191887).

Almost surely, 2^18429064544 is an apocalyptic number.

It is an amenable number.

18429064544 is an abundant number, since it is smaller than the sum of its proper divisors (21151540744).

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

18429064544 is a wasteful number, since it uses less digits than its factorization.

18429064544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52355318 (or 52355310 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 47.

The spelling of 18429064544 in words is "eighteen billion, four hundred twenty-nine million, sixty-four thousand, five hundred forty-four".