22597979798 has 4 divisors (see below), whose sum is σ = 33896969700. Its totient is φ = 11298989898.

The previous prime is 22597979779. The next prime is 22597979809. The reversal of 22597979798 is 89797979522.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×22597979798² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5649494948 + ... + 5649494951.

It is an arithmetic number, because the mean of its divisors is an integer number (8474242425).

Almost surely, 2^22597979798 is an apocalyptic number.

22597979798 is a deficient number, since it is larger than the sum of its proper divisors (11298989902).

22597979798 is a wasteful number, since it uses less digits than its factorization.

22597979798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11298989901.

The product of its digits is 360067680, while the sum is 74.

The spelling of 22597979798 in words is "twenty-two billion, five hundred ninety-seven million, nine hundred seventy-nine thousand, seven hundred ninety-eight".