16715645123 has 2 divisors, whose sum is σ = 16715645124. Its totient is φ = 16715645122.

The previous prime is 16715645113. The next prime is 16715645173. The reversal of 16715645123 is 32154651761.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16715645123 - 2⁶ = 16715645059 is a prime.

It is not a weakly prime, because it can be changed into another prime (16715645113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8357822561 + 8357822562.

It is an arithmetic number, because the mean of its divisors is an integer number (8357822562).

Almost surely, 2^16715645123 is an apocalyptic number.

16715645123 is a deficient number, since it is larger than the sum of its proper divisors (1).

16715645123 is an equidigital number, since it uses as much as digits as its factorization.

16715645123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The spelling of 16715645123 in words is "sixteen billion, seven hundred fifteen million, six hundred forty-five thousand, one hundred twenty-three".