13598566623 has 24 divisors (see below), whose sum is σ = 19753734000. Its totient is φ = 9014419584.

The previous prime is 13598566591. The next prime is 13598566661. The reversal of 13598566623 is 32666589531.

It is a happy number.

It is not a de Polignac number, because 13598566623 - 2⁵ = 13598566591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13598566623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13598562623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1762428 + ... + 1770126.

It is an arithmetic number, because the mean of its divisors is an integer number (823072250).

Almost surely, 2^13598566623 is an apocalyptic number.

13598566623 is a deficient number, since it is larger than the sum of its proper divisors (6155167377).

13598566623 is a wasteful number, since it uses less digits than its factorization.

13598566623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8791 (or 8788 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 54.

The spelling of 13598566623 in words is "thirteen billion, five hundred ninety-eight million, five hundred sixty-six thousand, six hundred twenty-three".