22505731032661 has 8 divisors (see below), whose sum is σ = 23972289768000. Its totient is φ = 21055026986688.

The previous prime is 22505731032643. The next prime is 22505731032721. The reversal of 22505731032661 is 16623013750522.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22505731032661 - 2²⁷ = 22505596814933 is a prime.

It is a super-2 number, since 2×22505731032661² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22505731032461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3963669411 + ... + 3963675088.

It is an arithmetic number, because the mean of its divisors is an integer number (2996536221000).

Almost surely, 2^{22505731032661} is an apocalyptic number.

It is an amenable number.

22505731032661 is a deficient number, since it is larger than the sum of its proper divisors (1466558735339).

22505731032661 is a wasteful number, since it uses less digits than its factorization.

22505731032661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7927344683.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 22505731032661 in words is "twenty-two trillion, five hundred five billion, seven hundred thirty-one million, thirty-two thousand, six hundred sixty-one".