22617887397 has 16 divisors (see below), whose sum is σ = 34467932160. Its totient is φ = 12923539632.

The previous prime is 22617887393. The next prime is 22617887419. The reversal of 22617887397 is 79378871622.

It is not a de Polignac number, because 22617887397 - 2² = 22617887393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22617887397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22617887393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323104 + ... + 386822.

It is an arithmetic number, because the mean of its divisors is an integer number (2154245760).

Almost surely, 2^22617887397 is an apocalyptic number.

It is an amenable number.

22617887397 is a deficient number, since it is larger than the sum of its proper divisors (11850044763).

22617887397 is a wasteful number, since it uses less digits than its factorization.

22617887397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80632.

The product of its digits is 14224896, while the sum is 60.

The spelling of 22617887397 in words is "twenty-two billion, six hundred seventeen million, eight hundred eighty-seven thousand, three hundred ninety-seven".