15216705923 has 2 divisors, whose sum is σ = 15216705924. Its totient is φ = 15216705922.

The previous prime is 15216705893. The next prime is 15216705943. The reversal of 15216705923 is 32950761251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15216705923 - 2¹² = 15216701827 is a prime.

It is not a weakly prime, because it can be changed into another prime (15216705943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7608352961 + 7608352962.

It is an arithmetic number, because the mean of its divisors is an integer number (7608352962).

Almost surely, 2^15216705923 is an apocalyptic number.

15216705923 is a deficient number, since it is larger than the sum of its proper divisors (1).

15216705923 is an equidigital number, since it uses as much as digits as its factorization.

15216705923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The spelling of 15216705923 in words is "fifteen billion, two hundred sixteen million, seven hundred five thousand, nine hundred twenty-three".