16686947162 has 4 divisors (see below), whose sum is σ = 25030420746. Its totient is φ = 8343473580.

The previous prime is 16686947131. The next prime is 16686947203. The reversal of 16686947162 is 26174968661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26174968661 = 23029 ⋅1136609.

It can be written as a sum of positive squares in only one way, i.e., 13754832961 + 2932114201 = 117281^2 + 54149^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16686947098 and 16686947107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4171736789 + ... + 4171736792.

Almost surely, 2^16686947162 is an apocalyptic number.

16686947162 is a deficient number, since it is larger than the sum of its proper divisors (8343473584).

16686947162 is an equidigital number, since it uses as much as digits as its factorization.

16686947162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343473583.

The product of its digits is 5225472, while the sum is 56.

The spelling of 16686947162 in words is "sixteen billion, six hundred eighty-six million, nine hundred forty-seven thousand, one hundred sixty-two".