16516452565 has 16 divisors (see below), whose sum is σ = 19903440960. Its totient is φ = 13157464320.

The previous prime is 16516452553. The next prime is 16516452611. The reversal of 16516452565 is 56525461561.

It is a happy number.

16516452565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16516452565 - 2⁷ = 16516452437 is a prime.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 1441710 + ... + 1453120.

It is an arithmetic number, because the mean of its divisors is an integer number (1243965060).

Almost surely, 2^16516452565 is an apocalyptic number.

It is an amenable number.

16516452565 is a deficient number, since it is larger than the sum of its proper divisors (3386988395).

16516452565 is a wasteful number, since it uses less digits than its factorization.

16516452565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12612.

The product of its digits is 1080000, while the sum is 46.

The spelling of 16516452565 in words is "sixteen billion, five hundred sixteen million, four hundred fifty-two thousand, five hundred sixty-five".