16115717217 has 8 divisors (see below), whose sum is σ = 22618550560. Its totient is φ = 10178347680.

The previous prime is 16115717209. The next prime is 16115717249. The reversal of 16115717217 is 71271751161.

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

It is not a de Polignac number, because 16115717217 - 2³ = 16115717209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16115717287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141365884 + ... + 141365997.

It is an arithmetic number, because the mean of its divisors is an integer number (2827318820).

Almost surely, 2^16115717217 is an apocalyptic number.

It is an amenable number.

16115717217 is a deficient number, since it is larger than the sum of its proper divisors (6502833343).

16115717217 is a wasteful number, since it uses less digits than its factorization.

16115717217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282731903.

The product of its digits is 20580, while the sum is 39.

The spelling of 16115717217 in words is "sixteen billion, one hundred fifteen million, seven hundred seventeen thousand, two hundred seventeen".