22940086155561 has 9 divisors (see below), whose sum is σ = 33135700757341. Its totient is φ = 15293381191212.

The previous prime is 22940086155559. The next prime is 22940086155653. The reversal of 22940086155561 is 16555168004922.

The square root of 22940086155561 is 4789581.

It is a perfect power (a square), and thus also a powerful number.

22940086155561 is a `hidden beast` number, since 2 + 2 + 9 + 4 + 0 + 0 + 86 + 1 + 5 + 556 + 1 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 22940086155561 - 2¹ = 22940086155559 is a prime.

It is a super-2 number, since 2×22940086155561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22940086155498 and 22940086155507.

It is not an unprimeable number, because it can be changed into a prime (22940086155061) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13570480 + ... + 15167006.

Almost surely, 2^{22940086155561} is an apocalyptic number.

22940086155561 is the 4789581-st square number.

22940086155561 is the 2394791-st centered octagonal number.

It is an amenable number.

22940086155561 is a deficient number, since it is larger than the sum of its proper divisors (10195614601780).

22940086155561 is an frugal number, since it uses more digits than its factorization.

22940086155561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193060 (or 1596530 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 22940086155561 in words is "twenty-two trillion, nine hundred forty billion, eighty-six million, one hundred fifty-five thousand, five hundred sixty-one".