16969694157 has 20 divisors (see below), whose sum is σ = 27299775580. Its totient is φ = 10442888064.

The previous prime is 16969694111. The next prime is 16969694173. The reversal of 16969694157 is 75149696961.

It can be written as a sum of positive squares in 2 ways, for example, as 714974121 + 16254720036 = 26739^2 + 127494^2 .

It is not a de Polignac number, because 16969694157 - 2¹¹ = 16969692109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16969694094 and 16969694103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16969694957) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8056732 + ... + 8058837.

It is an arithmetic number, because the mean of its divisors is an integer number (1364988779).

Almost surely, 2^16969694157 is an apocalyptic number.

It is an amenable number.

16969694157 is a deficient number, since it is larger than the sum of its proper divisors (10330081423).

16969694157 is a wasteful number, since it uses less digits than its factorization.

16969694157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16115594 (or 16115585 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 63.

The spelling of 16969694157 in words is "sixteen billion, nine hundred sixty-nine million, six hundred ninety-four thousand, one hundred fifty-seven".