18657343386552 has 64 divisors (see below), whose sum is σ = 51399479134080. Its totient is φ = 5607215897472.

The previous prime is 18657343386481. The next prime is 18657343386593. The reversal of 18657343386552 is 25568334375681.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

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, 695325858 + ... + 695352689.

It is an arithmetic number, because the mean of its divisors is an integer number (803116861470).

Almost surely, 2^{18657343386552} is an apocalyptic number.

18657343386552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18657343386552 is an abundant number, since it is smaller than the sum of its proper divisors (32742135747528).

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

18657343386552 is a wasteful number, since it uses less digits than its factorization.

18657343386552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390678612 (or 1390678608 counting only the distinct ones).

The product of its digits is 435456000, while the sum is 66.

The spelling of 18657343386552 in words is "eighteen trillion, six hundred fifty-seven billion, three hundred forty-three million, three hundred eighty-six thousand, five hundred fifty-two".