16679636191 has 8 divisors (see below), whose sum is σ = 17798027120. Its totient is φ = 15585296832.

The previous prime is 16679636119. The next prime is 16679636203. The reversal of 16679636191 is 19163697661.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16679636191 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 (16649636191) 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, 6011460 + ... + 6014233.

It is an arithmetic number, because the mean of its divisors is an integer number (2224753390).

Almost surely, 2^16679636191 is an apocalyptic number.

16679636191 is a deficient number, since it is larger than the sum of its proper divisors (1118390929).

16679636191 is a wasteful number, since it uses less digits than its factorization.

16679636191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025785.

The product of its digits is 2204496, while the sum is 55.

The spelling of 16679636191 in words is "sixteen billion, six hundred seventy-nine million, six hundred thirty-six thousand, one hundred ninety-one".