23157155563 has 2 divisors, whose sum is σ = 23157155564. Its totient is φ = 23157155562.

The previous prime is 23157155533. The next prime is 23157155587. The reversal of 23157155563 is 36555175132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23157155563 - 2⁵ = 23157155531 is a prime.

It is not a weakly prime, because it can be changed into another prime (23157155513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11578577781 + 11578577782.

It is an arithmetic number, because the mean of its divisors is an integer number (11578577782).

Almost surely, 2^23157155563 is an apocalyptic number.

23157155563 is a deficient number, since it is larger than the sum of its proper divisors (1).

23157155563 is an equidigital number, since it uses as much as digits as its factorization.

23157155563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472500, while the sum is 43.

The spelling of 23157155563 in words is "twenty-three billion, one hundred fifty-seven million, one hundred fifty-five thousand, five hundred sixty-three".