22317897977 has 2 divisors, whose sum is σ = 22317897978. Its totient is φ = 22317897976.

The previous prime is 22317897967. The next prime is 22317897989. The reversal of 22317897977 is 77979871322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22297656976 + 20241001 = 149324^2 + 4499^2 .

It is a cyclic number.

It is not a de Polignac number, because 22317897977 - 2¹² = 22317893881 is a prime.

It is a super-3 number, since 3×22317897977³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (22317897967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11158948988 + 11158948989.

It is an arithmetic number, because the mean of its divisors is an integer number (11158948989).

Almost surely, 2^22317897977 is an apocalyptic number.

It is an amenable number.

22317897977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22317897977 is an equidigital number, since it uses as much as digits as its factorization.

22317897977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18670176, while the sum is 62.

The spelling of 22317897977 in words is "twenty-two billion, three hundred seventeen million, eight hundred ninety-seven thousand, nine hundred seventy-seven".