18018123052536 has 48 divisors (see below), whose sum is σ = 48799738969800. Its totient is φ = 6005960315712.

The previous prime is 18018123052519. The next prime is 18018123052561. The reversal of 18018123052536 is 63525032181081.

18018123052536 is a `hidden beast` number, since 1 + 8 + 0 + 1 + 81 + 2 + 30 + 5 + 2 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18018123052491 and 18018123052500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3839370 + ... + 7125798.

Almost surely, 2^{18018123052536} is an apocalyptic number.

It is an amenable number.

18018123052536 is an abundant number, since it is smaller than the sum of its proper divisors (30781615917264).

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

18018123052536 is a wasteful number, since it uses less digits than its factorization.

18018123052536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3362588 (or 3362581 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 18018123052536 in words is "eighteen trillion, eighteen billion, one hundred twenty-three million, fifty-two thousand, five hundred thirty-six".