16456311923 has 2 divisors, whose sum is σ = 16456311924. Its totient is φ = 16456311922.

The previous prime is 16456311913. The next prime is 16456311941. The reversal of 16456311923 is 32911365461.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16456311923 - 2²⁰ = 16455263347 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (16456311913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8228155961 + 8228155962.

It is an arithmetic number, because the mean of its divisors is an integer number (8228155962).

Almost surely, 2^16456311923 is an apocalyptic number.

16456311923 is a deficient number, since it is larger than the sum of its proper divisors (1).

16456311923 is an equidigital number, since it uses as much as digits as its factorization.

16456311923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 41.

The spelling of 16456311923 in words is "sixteen billion, four hundred fifty-six million, three hundred eleven thousand, nine hundred twenty-three".