22707509857 has 2 divisors, whose sum is σ = 22707509858. Its totient is φ = 22707509856.

The previous prime is 22707509821. The next prime is 22707509861. The reversal of 22707509857 is 75890570722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22430753361 + 276756496 = 149769^2 + 16636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22707509857 is a prime.

It is not a weakly prime, because it can be changed into another prime (22707509887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11353754928 + 11353754929.

It is an arithmetic number, because the mean of its divisors is an integer number (11353754929).

Almost surely, 2^22707509857 is an apocalyptic number.

It is an amenable number.

22707509857 is a deficient number, since it is larger than the sum of its proper divisors (1).

22707509857 is an equidigital number, since it uses as much as digits as its factorization.

22707509857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2469600, while the sum is 52.

The spelling of 22707509857 in words is "twenty-two billion, seven hundred seven million, five hundred nine thousand, eight hundred fifty-seven".