22661087297 has 4 divisors (see below), whose sum is σ = 22662233220. Its totient is φ = 22659941376.

The previous prime is 22661087263. The next prime is 22661087381. The reversal of 22661087297 is 79278016622.

It is a Cunningham number, because it is equal to 150536²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20341605376 + 2319481921 = 142624^2 + 48161^2 .

It is a cyclic number.

It is not a de Polignac number, because 22661087297 - 2⁶ = 22661087233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22661086297) 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 3 ways as a sum of consecutive naturals, for example, 542768 + ... + 583025.

It is an arithmetic number, because the mean of its divisors is an integer number (5665558305).

Almost surely, 2^22661087297 is an apocalyptic number.

It is an amenable number.

22661087297 is a deficient number, since it is larger than the sum of its proper divisors (1145923).

22661087297 is a wasteful number, since it uses less digits than its factorization.

22661087297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145922.

The product of its (nonzero) digits is 1016064, while the sum is 50.

The spelling of 22661087297 in words is "twenty-two billion, six hundred sixty-one million, eighty-seven thousand, two hundred ninety-seven".