23752009979 has 2 divisors, whose sum is σ = 23752009980. Its totient is φ = 23752009978.

The previous prime is 23752009973. The next prime is 23752009999. The reversal of 23752009979 is 97990025732.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23752009979 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23752009979.

It is not a weakly prime, because it can be changed into another prime (23752009973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11876004989 + 11876004990.

It is an arithmetic number, because the mean of its divisors is an integer number (11876004990).

Almost surely, 2^23752009979 is an apocalyptic number.

23752009979 is a deficient number, since it is larger than the sum of its proper divisors (1).

23752009979 is an equidigital number, since it uses as much as digits as its factorization.

23752009979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2143260, while the sum is 53.

The spelling of 23752009979 in words is "twenty-three billion, seven hundred fifty-two million, nine thousand, nine hundred seventy-nine".