16697136685 has 8 divisors (see below), whose sum is σ = 20234946456. Its totient is φ = 13225454400.

The previous prime is 16697136667. The next prime is 16697136727. The reversal of 16697136685 is 58663179661.

It can be written as a sum of positive squares in 4 ways, for example, as 8350121641 + 8347015044 = 91379^2 + 91362^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-16697136685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16531314 + ... + 16532323.

It is an arithmetic number, because the mean of its divisors is an integer number (2529368307).

Almost surely, 2^16697136685 is an apocalyptic number.

It is an amenable number.

16697136685 is a deficient number, since it is larger than the sum of its proper divisors (3537809771).

16697136685 is a wasteful number, since it uses less digits than its factorization.

16697136685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33063743.

The product of its digits is 9797760, while the sum is 58.

The spelling of 16697136685 in words is "sixteen billion, six hundred ninety-seven million, one hundred thirty-six thousand, six hundred eighty-five".