22398279723 has 6 divisors (see below), whose sum is σ = 32353070724. Its totient is φ = 14932186476.

The previous prime is 22398279697. The next prime is 22398279733. The reversal of 22398279723 is 32797289322.

It is not a de Polignac number, because 22398279723 - 2²⁰ = 22397231147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22398279723.

It is not an unprimeable number, because it can be changed into a prime (22398279733) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1244348865 + ... + 1244348882.

It is an arithmetic number, because the mean of its divisors is an integer number (5392178454).

Almost surely, 2^22398279723 is an apocalyptic number.

22398279723 is a deficient number, since it is larger than the sum of its proper divisors (9954791001).

22398279723 is a wasteful number, since it uses less digits than its factorization.

22398279723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2488697753 (or 2488697750 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 54.

The spelling of 22398279723 in words is "twenty-two billion, three hundred ninety-eight million, two hundred seventy-nine thousand, seven hundred twenty-three".