16519980959 has 2 divisors, whose sum is σ = 16519980960. Its totient is φ = 16519980958.

The previous prime is 16519980949. The next prime is 16519981007. The reversal of 16519980959 is 95908991561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16519980959 - 2²⁰ = 16518932383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16519980949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8259990479 + 8259990480.

It is an arithmetic number, because the mean of its divisors is an integer number (8259990480).

Almost surely, 2^16519980959 is an apocalyptic number.

16519980959 is a deficient number, since it is larger than the sum of its proper divisors (1).

16519980959 is an equidigital number, since it uses as much as digits as its factorization.

16519980959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7873200, while the sum is 62.

The spelling of 16519980959 in words is "sixteen billion, five hundred nineteen million, nine hundred eighty thousand, nine hundred fifty-nine".