22661416577 has 4 divisors (see below), whose sum is σ = 22839853056. Its totient is φ = 22482980100.

The previous prime is 22661416537. The next prime is 22661416597. The reversal of 22661416577 is 77561416622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77561416622 = 2 ⋅38780708311.

It is a cyclic number.

It is not a de Polignac number, because 22661416577 - 2⁶ = 22661416513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22661416537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89218049 + ... + 89218302.

It is an arithmetic number, because the mean of its divisors is an integer number (5709963264).

Almost surely, 2^22661416577 is an apocalyptic number.

It is an amenable number.

22661416577 is a deficient number, since it is larger than the sum of its proper divisors (178436479).

22661416577 is a wasteful number, since it uses less digits than its factorization.

22661416577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178436478.

The product of its digits is 846720, while the sum is 47.

The spelling of 22661416577 in words is "twenty-two billion, six hundred sixty-one million, four hundred sixteen thousand, five hundred seventy-seven".