23995011787 has 2 divisors, whose sum is σ = 23995011788. Its totient is φ = 23995011786.

The previous prime is 23995011779. The next prime is 23995011791. The reversal of 23995011787 is 78711059932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23995011787 - 2³ = 23995011779 is a prime.

It is not a weakly prime, because it can be changed into another prime (23995011757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11997505893 + 11997505894.

It is an arithmetic number, because the mean of its divisors is an integer number (11997505894).

Almost surely, 2^23995011787 is an apocalyptic number.

23995011787 is a deficient number, since it is larger than the sum of its proper divisors (1).

23995011787 is an equidigital number, since it uses as much as digits as its factorization.

23995011787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 23995011787 in words is "twenty-three billion, nine hundred ninety-five million, eleven thousand, seven hundred eighty-seven".