16416258917 has 8 divisors (see below), whose sum is σ = 16586297112. Its totient is φ = 16246368000.

The previous prime is 16416258857. The next prime is 16416258923. The reversal of 16416258917 is 71985261461.

It can be written as a sum of positive squares in 4 ways, for example, as 10362018436 + 6054240481 = 101794^2 + 77809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16416258917 - 2⁶ = 16416258853 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 (16416258217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194753 + ... + 266009.

It is an arithmetic number, because the mean of its divisors is an integer number (2073287139).

Almost surely, 2^16416258917 is an apocalyptic number.

It is an amenable number.

16416258917 is a deficient number, since it is larger than the sum of its proper divisors (170038195).

16416258917 is a wasteful number, since it uses less digits than its factorization.

16416258917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73639.

The product of its digits is 725760, while the sum is 50.

The spelling of 16416258917 in words is "sixteen billion, four hundred sixteen million, two hundred fifty-eight thousand, nine hundred seventeen".