22605155261 has 4 divisors (see below), whose sum is σ = 24344013372. Its totient is φ = 20866297152.

The previous prime is 22605155213. The next prime is 22605155263. The reversal of 22605155261 is 16255150622.

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 3363304036 + 19241851225 = 57994^2 + 138715^2 .

It is a cyclic number.

It is not a de Polignac number, because 22605155261 - 2⁶ = 22605155197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22605155263) 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, 869429036 + ... + 869429061.

It is an arithmetic number, because the mean of its divisors is an integer number (6086003343).

Almost surely, 2^22605155261 is an apocalyptic number.

It is an amenable number.

22605155261 is a deficient number, since it is larger than the sum of its proper divisors (1738858111).

22605155261 is a wasteful number, since it uses less digits than its factorization.

22605155261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1738858110.

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 22605155261 in words is "twenty-two billion, six hundred five million, one hundred fifty-five thousand, two hundred sixty-one".