16961676169 has 27 divisors (see below), whose sum is σ = 18523268967. Its totient is φ = 15528417984.

The previous prime is 16961676167. The next prime is 16961676187. The reversal of 16961676169 is 96167616961.

The square root of 16961676169 is 130237.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 13205457225 + 3756218944 = 114915^2 + 61288^2 .

It is not a de Polignac number, because 16961676169 - 2¹ = 16961676167 is a prime.

It is a super-2 number, since 2×16961676169² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16961676167) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 104059282 + ... + 104059444.

Almost surely, 2^16961676169 is an apocalyptic number.

16961676169 is the 130237-th square number.

16961676169 is the 65119-th centered octagonal number.

It is an amenable number.

16961676169 is a deficient number, since it is larger than the sum of its proper divisors (1561592798).

16961676169 is an frugal number, since it uses more digits than its factorization.

16961676169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 227 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 58.

The spelling of 16961676169 in words is "sixteen billion, nine hundred sixty-one million, six hundred seventy-six thousand, one hundred sixty-nine".