22645006661 has 4 divisors (see below), whose sum is σ = 23629572192. Its totient is φ = 21660441132.

The previous prime is 22645006651. The next prime is 22645006679. The reversal of 22645006661 is 16660054622.

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.

It is a cyclic number.

It is not a de Polignac number, because 22645006661 - 2¹⁸ = 22644744517 is a prime.

It is a super-3 number, since 3×22645006661³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22645006651) 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, 492282731 + ... + 492282776.

It is an arithmetic number, because the mean of its divisors is an integer number (5907393048).

Almost surely, 2^22645006661 is an apocalyptic number.

It is an amenable number.

22645006661 is a deficient number, since it is larger than the sum of its proper divisors (984565531).

22645006661 is an equidigital number, since it uses as much as digits as its factorization.

22645006661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984565530.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 22645006661 in words is "twenty-two billion, six hundred forty-five million, six thousand, six hundred sixty-one".