22556004646409 has 16 divisors (see below), whose sum is σ = 24306221763600. Its totient is φ = 20807951901696.

The previous prime is 22556004646391. The next prime is 22556004646429. The reversal of 22556004646409 is 90464640065522.

It can be written as a sum of positive squares in 8 ways, for example, as 864890700025 + 21691113946384 = 929995^2 + 4657372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22556004646409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22556004646429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699763757 + ... + 699795989.

It is an arithmetic number, because the mean of its divisors is an integer number (1519138860225).

Almost surely, 2^{22556004646409} is an apocalyptic number.

It is an amenable number.

22556004646409 is a deficient number, since it is larger than the sum of its proper divisors (1750217117191).

22556004646409 is a wasteful number, since it uses less digits than its factorization.

22556004646409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64124.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 22556004646409 in words is "twenty-two trillion, five hundred fifty-six billion, four million, six hundred forty-six thousand, four hundred nine".