22550918641 has 2 divisors, whose sum is σ = 22550918642. Its totient is φ = 22550918640.

The previous prime is 22550918623. The next prime is 22550918779. The reversal of 22550918641 is 14681905522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11342250000 + 11208668641 = 106500^2 + 105871^2 .

It is a cyclic number.

It is not a de Polignac number, because 22550918641 - 2¹⁵ = 22550885873 is a prime.

It is not a weakly prime, because it can be changed into another prime (22550918941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11275459320 + 11275459321.

It is an arithmetic number, because the mean of its divisors is an integer number (11275459321).

Almost surely, 2^22550918641 is an apocalyptic number.

It is an amenable number.

22550918641 is a deficient number, since it is larger than the sum of its proper divisors (1).

22550918641 is an equidigital number, since it uses as much as digits as its factorization.

22550918641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 22550918641 in words is "twenty-two billion, five hundred fifty million, nine hundred eighteen thousand, six hundred forty-one".