16496815329989 has 2 divisors, whose sum is σ = 16496815329990. Its totient is φ = 16496815329988.

The previous prime is 16496815329983. The next prime is 16496815330187. The reversal of 16496815329989 is 98992351869461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16331434841089 + 165380488900 = 4041217^2 + 406670^2 .

It is a cyclic number.

It is not a de Polignac number, because 16496815329989 - 2²⁸ = 16496546894533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16496815329983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8248407664994 + 8248407664995.

It is an arithmetic number, because the mean of its divisors is an integer number (8248407664995).

Almost surely, 2^{16496815329989} is an apocalyptic number.

It is an amenable number.

16496815329989 is a deficient number, since it is larger than the sum of its proper divisors (1).

16496815329989 is an equidigital number, since it uses as much as digits as its factorization.

16496815329989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1813985280, while the sum is 80.

The spelling of 16496815329989 in words is "sixteen trillion, four hundred ninety-six billion, eight hundred fifteen million, three hundred twenty-nine thousand, nine hundred eighty-nine".