16966696949 has 8 divisors (see below), whose sum is σ = 18450272088. Its totient is φ = 15537070080.

The previous prime is 16966696907. The next prime is 16966696951. The reversal of 16966696949 is 94969666961.

It can be written as a sum of positive squares in 4 ways, for example, as 5304208900 + 11662488049 = 72830^2 + 107993^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 16966696949 - 2²⁸ = 16698261493 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 (16966696349) 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, 13486412 + ... + 13487669.

It is an arithmetic number, because the mean of its divisors is an integer number (2306284011).

Almost surely, 2^16966696949 is an apocalyptic number.

It is an amenable number.

16966696949 is a deficient number, since it is larger than the sum of its proper divisors (1483575139).

16966696949 is a wasteful number, since it uses less digits than its factorization.

16966696949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26974135.

The product of its digits is 204073344, while the sum is 71.

The spelling of 16966696949 in words is "sixteen billion, nine hundred sixty-six million, six hundred ninety-six thousand, nine hundred forty-nine".