16606779013 has 4 divisors (see below), whose sum is σ = 18116486208. Its totient is φ = 15097071820.

The previous prime is 16606779011. The next prime is 16606779041. The reversal of 16606779013 is 31097760661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16606779013 - 2¹ = 16606779011 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 (16606779011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 754853581 + ... + 754853602.

It is an arithmetic number, because the mean of its divisors is an integer number (4529121552).

Almost surely, 2^16606779013 is an apocalyptic number.

It is an amenable number.

16606779013 is a deficient number, since it is larger than the sum of its proper divisors (1509707195).

16606779013 is a wasteful number, since it uses less digits than its factorization.

16606779013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509707194.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 16606779013 in words is "sixteen billion, six hundred six million, seven hundred seventy-nine thousand, thirteen".