16176797969 has 4 divisors (see below), whose sum is σ = 16186828596. Its totient is φ = 16166767344.

The previous prime is 16176797957. The next prime is 16176797981. The reversal of 16176797969 is 96979767161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96979767161 = 349 ⋅277878989.

It is an interprime number because it is at equal distance from previous prime (16176797957) and next prime (16176797981).

It can be written as a sum of positive squares in 2 ways, for example, as 4187642944 + 11989155025 = 64712^2 + 109495^2 .

It is a cyclic number.

It is not a de Polignac number, because 16176797969 - 2⁴ = 16176797953 is a prime.

It is a super-2 number, since 2×16176797969² (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 = 16176797899 and 16176797908.

It is not an unprimeable number, because it can be changed into a prime (16176797909) 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, 5012894 + ... + 5016119.

It is an arithmetic number, because the mean of its divisors is an integer number (4046707149).

Almost surely, 2^16176797969 is an apocalyptic number.

It is an amenable number.

16176797969 is a deficient number, since it is larger than the sum of its proper divisors (10030627).

16176797969 is a wasteful number, since it uses less digits than its factorization.

16176797969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10030626.

The product of its digits is 54010152, while the sum is 68.

The spelling of 16176797969 in words is "sixteen billion, one hundred seventy-six million, seven hundred ninety-seven thousand, nine hundred sixty-nine".