22399911556 has 27 divisors (see below), whose sum is σ = 43093767703. Its totient is φ = 10180281320.

The previous prime is 22399911539. The next prime is 22399911559. The reversal of 22399911556 is 65511999322.

The square root of 22399911556 is 149666.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×22399911556² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22399911559) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3289251 + ... + 3296053.

Almost surely, 2^22399911556 is an apocalyptic number.

22399911556 is the 149666-th square number.

It is an amenable number.

22399911556 is a deficient number, since it is larger than the sum of its proper divisors (20693856147).

22399911556 is an frugal number, since it uses more digits than its factorization.

22399911556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13632 (or 6816 counting only the distinct ones).

The product of its digits is 1312200, while the sum is 52.

The spelling of 22399911556 in words is "twenty-two billion, three hundred ninety-nine million, nine hundred eleven thousand, five hundred fifty-six".