22377579881 has 2 divisors, whose sum is σ = 22377579882. Its totient is φ = 22377579880.

The previous prime is 22377579877. The next prime is 22377579883. The reversal of 22377579881 is 18897577322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15992131600 + 6385448281 = 126460^2 + 79909^2 .

It is a cyclic number.

It is not a de Polignac number, because 22377579881 - 2² = 22377579877 is a prime.

It is a super-2 number, since 2×22377579881² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 22377579883, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22377579881.

It is not a weakly prime, because it can be changed into another prime (22377579883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11188789940 + 11188789941.

It is an arithmetic number, because the mean of its divisors is an integer number (11188789941).

Almost surely, 2^22377579881 is an apocalyptic number.

It is an amenable number.

22377579881 is a deficient number, since it is larger than the sum of its proper divisors (1).

22377579881 is an equidigital number, since it uses as much as digits as its factorization.

22377579881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11854080, while the sum is 59.

The spelling of 22377579881 in words is "twenty-two billion, three hundred seventy-seven million, five hundred seventy-nine thousand, eight hundred eighty-one".