22515654661 has 8 divisors (see below), whose sum is σ = 23533833600. Its totient is φ = 21500745552.

The previous prime is 22515654643. The next prime is 22515654697. The reversal of 22515654661 is 16645651522.

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

It is not a de Polignac number, because 22515654661 - 2¹⁵ = 22515621893 is a prime.

It is a super-2 number, since 2×22515654661² (a number of 22 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 (22515654961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 803370 + ... + 830923.

It is an arithmetic number, because the mean of its divisors is an integer number (2941729200).

Almost surely, 2^22515654661 is an apocalyptic number.

It is an amenable number.

22515654661 is a deficient number, since it is larger than the sum of its proper divisors (1018178939).

22515654661 is a wasteful number, since it uses less digits than its factorization.

22515654661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634915.

The product of its digits is 432000, while the sum is 43.

The spelling of 22515654661 in words is "twenty-two billion, five hundred fifteen million, six hundred fifty-four thousand, six hundred sixty-one".