22404215997 has 24 divisors (see below), whose sum is σ = 34857108000. Its totient is φ = 13820956128.

The previous prime is 22404215957. The next prime is 22404216001. The reversal of 22404215997 is 79951240422.

22404215997 is a `hidden beast` number, since 2 + 2 + 404 + 2 + 159 + 97 = 666.

It is not a de Polignac number, because 22404215997 - 2²⁷ = 22269998269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22404215917) 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, 1516122 + ... + 1530827.

It is an arithmetic number, because the mean of its divisors is an integer number (1452379500).

Almost surely, 2^22404215997 is an apocalyptic number.

It is an amenable number.

22404215997 is a deficient number, since it is larger than the sum of its proper divisors (12452892003).

22404215997 is a wasteful number, since it uses less digits than its factorization.

22404215997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047017 (or 3047014 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 22404215997 in words is "twenty-two billion, four hundred four million, two hundred fifteen thousand, nine hundred ninety-seven".