22244340657 has 32 divisors (see below), whose sum is σ = 37604367360. Its totient is φ = 11359638720.

The previous prime is 22244340619. The next prime is 22244340661. The reversal of 22244340657 is 75604344222.

It is not a de Polignac number, because 22244340657 - 2⁶ = 22244340593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22244348657) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 802438 + ... + 829695.

It is an arithmetic number, because the mean of its divisors is an integer number (1175136480).

Almost surely, 2^22244340657 is an apocalyptic number.

It is an amenable number.

22244340657 is a deficient number, since it is larger than the sum of its proper divisors (15360026703).

22244340657 is a wasteful number, since it uses less digits than its factorization.

22244340657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632213.

The product of its (nonzero) digits is 322560, while the sum is 39.

Adding to 22244340657 its reverse (75604344222), we get a palindrome (97848684879).

The spelling of 22244340657 in words is "twenty-two billion, two hundred forty-four million, three hundred forty thousand, six hundred fifty-seven".