18553530270513 has 64 divisors (see below), whose sum is σ = 28509136957440. Its totient is φ = 10513544428800.

The previous prime is 18553530270403. The next prime is 18553530270547. The reversal of 18553530270513 is 31507203535581.

It is not a de Polignac number, because 18553530270513 - 2²⁴ = 18553513493297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18553530271513) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1423137631 + ... + 1423150667.

It is an arithmetic number, because the mean of its divisors is an integer number (445455264960).

Almost surely, 2^{18553530270513} is an apocalyptic number.

It is an amenable number.

18553530270513 is a deficient number, since it is larger than the sum of its proper divisors (9955606686927).

18553530270513 is a wasteful number, since it uses less digits than its factorization.

18553530270513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14398.

The product of its (nonzero) digits is 1890000, while the sum is 48.

The spelling of 18553530270513 in words is "eighteen trillion, five hundred fifty-three billion, five hundred thirty million, two hundred seventy thousand, five hundred thirteen".