16416663497 has 4 divisors (see below), whose sum is σ = 17679483780. Its totient is φ = 15153843216.

The previous prime is 16416663481. The next prime is 16416663503. The reversal of 16416663497 is 79436661461.

16416663497 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.

It can be written as a sum of positive squares in 2 ways, for example, as 6423862201 + 9992801296 = 80149^2 + 99964^2 .

It is a cyclic number.

It is not a de Polignac number, because 16416663497 - 2⁴ = 16416663481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16416663437) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 631410122 + ... + 631410147.

It is an arithmetic number, because the mean of its divisors is an integer number (4419870945).

Almost surely, 2^16416663497 is an apocalyptic number.

It is an amenable number.

16416663497 is a deficient number, since it is larger than the sum of its proper divisors (1262820283).

16416663497 is a wasteful number, since it uses less digits than its factorization.

16416663497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262820282.

The product of its digits is 3919104, while the sum is 53.

The spelling of 16416663497 in words is "sixteen billion, four hundred sixteen million, six hundred sixty-three thousand, four hundred ninety-seven".