22972870157 has 2 divisors, whose sum is σ = 22972870158. Its totient is φ = 22972870156.

The previous prime is 22972870079. The next prime is 22972870183. The reversal of 22972870157 is 75107827922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20087676361 + 2885193796 = 141731^2 + 53714^2 .

It is a cyclic number.

It is not a de Polignac number, because 22972870157 - 2²² = 22968675853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22972878157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11486435078 + 11486435079.

It is an arithmetic number, because the mean of its divisors is an integer number (11486435079).

Almost surely, 2^22972870157 is an apocalyptic number.

It is an amenable number.

22972870157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22972870157 is an equidigital number, since it uses as much as digits as its factorization.

22972870157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 987840, while the sum is 50.

The spelling of 22972870157 in words is "twenty-two billion, nine hundred seventy-two million, eight hundred seventy thousand, one hundred fifty-seven".