16169666947 has 12 divisors (see below), whose sum is σ = 18841689720. Its totient is φ = 13836078816.

The previous prime is 16169666917. The next prime is 16169666963. The reversal of 16169666947 is 74966696161.

It is a happy number.

It is not a de Polignac number, because 16169666947 - 2¹¹ = 16169664899 is a prime.

It is a super-2 number, since 2×16169666947² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16169666917) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252322 + ... + 309847.

It is an arithmetic number, because the mean of its divisors is an integer number (1570140810).

Almost surely, 2^16169666947 is an apocalyptic number.

16169666947 is a deficient number, since it is larger than the sum of its proper divisors (2672022773).

16169666947 is an equidigital number, since it uses as much as digits as its factorization.

16169666947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562770 (or 562763 counting only the distinct ones).

The product of its digits is 17635968, while the sum is 61.

The spelling of 16169666947 in words is "sixteen billion, one hundred sixty-nine million, six hundred sixty-six thousand, nine hundred forty-seven".