22445039977 has 2 divisors, whose sum is σ = 22445039978. Its totient is φ = 22445039976.

The previous prime is 22445039971. The next prime is 22445040017. The reversal of 22445039977 is 77993054422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14760063081 + 7684976896 = 121491^2 + 87664^2 .

It is a cyclic number.

It is not a de Polignac number, because 22445039977 - 2⁷ = 22445039849 is a prime.

It is not a weakly prime, because it can be changed into another prime (22445039971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11222519988 + 11222519989.

It is an arithmetic number, because the mean of its divisors is an integer number (11222519989).

Almost surely, 2^22445039977 is an apocalyptic number.

It is an amenable number.

22445039977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22445039977 is an equidigital number, since it uses as much as digits as its factorization.

22445039977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 22445039977 in words is "twenty-two billion, four hundred forty-five million, thirty-nine thousand, nine hundred seventy-seven".