22650161657 has 4 divisors (see below), whose sum is σ = 22687849716. Its totient is φ = 22612473600.

The previous prime is 22650161641. The next prime is 22650161713. The reversal of 22650161657 is 75616105622.

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 17545916521 + 5104245136 = 132461^2 + 71444^2 .

It is a cyclic number.

It is not a de Polignac number, because 22650161657 - 2⁴ = 22650161641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22650161857) 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, 18843128 + ... + 18844329.

It is an arithmetic number, because the mean of its divisors is an integer number (5671962429).

Almost surely, 2^22650161657 is an apocalyptic number.

It is an amenable number.

22650161657 is a deficient number, since it is larger than the sum of its proper divisors (37688059).

22650161657 is an equidigital number, since it uses as much as digits as its factorization.

22650161657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37688058.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 22650161657 in words is "twenty-two billion, six hundred fifty million, one hundred sixty-one thousand, six hundred fifty-seven".