22623872561 has 16 divisors (see below), whose sum is σ = 24054408144. Its totient is φ = 21204578304.

The previous prime is 22623872549. The next prime is 22623872563. The reversal of 22623872561 is 16527832622.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 9728161 + 22614144400 = 3119^2 + 150380^2 .

It is a cyclic number.

It is not a de Polignac number, because 22623872561 - 2¹⁰ = 22623871537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22623872563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6259991 + ... + 6263603.

It is an arithmetic number, because the mean of its divisors is an integer number (1503400509).

Almost surely, 2^22623872561 is an apocalyptic number.

It is an amenable number.

22623872561 is a deficient number, since it is larger than the sum of its proper divisors (1430535583).

22623872561 is a wasteful number, since it uses less digits than its factorization.

22623872561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060.

The product of its digits is 483840, while the sum is 44.

The spelling of 22623872561 in words is "twenty-two billion, six hundred twenty-three million, eight hundred seventy-two thousand, five hundred sixty-one".