16516279291799 has 32 divisors (see below), whose sum is σ = 19553286172800. Its totient is φ = 13649996828160.

The previous prime is 16516279291793. The next prime is 16516279291819. The reversal of 16516279291799 is 99719297261561.

It is not a de Polignac number, because 16516279291799 - 2⁴ = 16516279291783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16516279291793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1151675369 + ... + 1151689709.

It is an arithmetic number, because the mean of its divisors is an integer number (611040192900).

Almost surely, 2^{16516279291799} is an apocalyptic number.

16516279291799 is a deficient number, since it is larger than the sum of its proper divisors (3037006881001).

16516279291799 is a wasteful number, since it uses less digits than its factorization.

16516279291799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21723.

The product of its digits is 231472080, while the sum is 74.

The spelling of 16516279291799 in words is "sixteen trillion, five hundred sixteen billion, two hundred seventy-nine million, two hundred ninety-one thousand, seven hundred ninety-nine".