18053139412 has 24 divisors (see below), whose sum is σ = 39388668480. Its totient is φ = 7033690560.

The previous prime is 18053139397. The next prime is 18053139431. The reversal of 18053139412 is 21493135081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29306737 + ... + 29307352.

It is an arithmetic number, because the mean of its divisors is an integer number (1641194520).

Almost surely, 2^18053139412 is an apocalyptic number.

It is an amenable number.

18053139412 is an abundant number, since it is smaller than the sum of its proper divisors (21335529068).

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

18053139412 is a wasteful number, since it uses less digits than its factorization.

18053139412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58614111 (or 58614109 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 18053139412 in words is "eighteen billion, fifty-three million, one hundred thirty-nine thousand, four hundred twelve".