21748936596 has 24 divisors (see below), whose sum is σ = 51607647840. Its totient is φ = 7126769952.

The previous prime is 21748936591. The next prime is 21748936613. The reversal of 21748936596 is 69563984712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21748936591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15358711 + ... + 15360126.

It is an arithmetic number, because the mean of its divisors is an integer number (2150318660).

Almost surely, 2^21748936596 is an apocalyptic number.

It is an amenable number.

21748936596 is an abundant number, since it is smaller than the sum of its proper divisors (29858711244).

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

21748936596 is a wasteful number, since it uses less digits than its factorization.

21748936596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30718903 (or 30718901 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 60.

The spelling of 21748936596 in words is "twenty-one billion, seven hundred forty-eight million, nine hundred thirty-six thousand, five hundred ninety-six".