18693549532344 has 16 divisors (see below), whose sum is σ = 46733873830920. Its totient is φ = 6231183177440.

The previous prime is 18693549532331. The next prime is 18693549532367. The reversal of 18693549532344 is 44323594539681.

It is a happy number.

It is a super-2 number, since 2×18693549532344² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389448948567 + ... + 389448948614.

Almost surely, 2^{18693549532344} is an apocalyptic number.

It is an amenable number.

18693549532344 is an abundant number, since it is smaller than the sum of its proper divisors (28040324298576).

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

18693549532344 is a wasteful number, since it uses less digits than its factorization.

18693549532344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778897897190 (or 778897897186 counting only the distinct ones).

The product of its digits is 335923200, while the sum is 66.

The spelling of 18693549532344 in words is "eighteen trillion, six hundred ninety-three billion, five hundred forty-nine million, five hundred thirty-two thousand, three hundred forty-four".