23978304787 has 2 divisors, whose sum is σ = 23978304788. Its totient is φ = 23978304786.

The previous prime is 23978304709. The next prime is 23978304797. The reversal of 23978304787 is 78740387932.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23978304787 is a prime.

It is not a weakly prime, because it can be changed into another prime (23978304797) 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, 11989152393 + 11989152394.

It is an arithmetic number, because the mean of its divisors is an integer number (11989152394).

Almost surely, 2^23978304787 is an apocalyptic number.

23978304787 is a deficient number, since it is larger than the sum of its proper divisors (1).

23978304787 is an equidigital number, since it uses as much as digits as its factorization.

23978304787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 23978304787 in words is "twenty-three billion, nine hundred seventy-eight million, three hundred four thousand, seven hundred eighty-seven".