16979345069 has 4 divisors (see below), whose sum is σ = 16989834240. Its totient is φ = 16968855900.

The previous prime is 16979345063. The next prime is 16979345099. The reversal of 16979345069 is 96054397961.

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 a de Polignac number, because none of the positive numbers 2^k-16979345069 is a prime.

It is a super-2 number, since 2×16979345069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16979344999 and 16979345017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16979345063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5242157 + ... + 5245394.

It is an arithmetic number, because the mean of its divisors is an integer number (4247458560).

Almost surely, 2^16979345069 is an apocalyptic number.

It is an amenable number.

16979345069 is a deficient number, since it is larger than the sum of its proper divisors (10489171).

16979345069 is a wasteful number, since it uses less digits than its factorization.

16979345069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10489170.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The spelling of 16979345069 in words is "sixteen billion, nine hundred seventy-nine million, three hundred forty-five thousand, sixty-nine".