18474161075440 has 80 divisors (see below), whose sum is σ = 49920493455360. Its totient is φ = 6226642172160.

The previous prime is 18474161075437. The next prime is 18474161075453. The reversal of 18474161075440 is 4457016147481.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 279539616 + ... + 279605695.

It is an arithmetic number, because the mean of its divisors is an integer number (624006168192).

Almost surely, 2^{18474161075440} is an apocalyptic number.

18474161075440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18474161075440 is an abundant number, since it is smaller than the sum of its proper divisors (31446332379920).

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

18474161075440 is a wasteful number, since it uses less digits than its factorization.

18474161075440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559145390 (or 559145384 counting only the distinct ones).

The product of its (nonzero) digits is 3010560, while the sum is 52.

The spelling of 18474161075440 in words is "eighteen trillion, four hundred seventy-four billion, one hundred sixty-one million, seventy-five thousand, four hundred forty".