16516593794 has 4 divisors (see below), whose sum is σ = 24774890694. Its totient is φ = 8258296896.

The previous prime is 16516593787. The next prime is 16516593803. The reversal of 16516593794 is 49739561561.

16516593794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49739561561 = 73 ⋅681363857.

It can be written as a sum of positive squares in only one way, i.e., 13772196025 + 2744397769 = 117355^2 + 52387^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4129148447 + ... + 4129148450.

Almost surely, 2^16516593794 is an apocalyptic number.

16516593794 is a deficient number, since it is larger than the sum of its proper divisors (8258296900).

16516593794 is an equidigital number, since it uses as much as digits as its factorization.

16516593794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8258296899.

The product of its digits is 6123600, while the sum is 56.

The spelling of 16516593794 in words is "sixteen billion, five hundred sixteen million, five hundred ninety-three thousand, seven hundred ninety-four".