16397795827 has 16 divisors (see below), whose sum is σ = 19694447872. Its totient is φ = 13357340640.

The previous prime is 16397795819. The next prime is 16397795857. The reversal of 16397795827 is 72859779361.

16397795827 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16397795827 - 2³ = 16397795819 is a prime.

It is a super-2 number, since 2×16397795827² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16397795857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 725049 + ... + 747322.

It is an arithmetic number, because the mean of its divisors is an integer number (1230902992).

Almost surely, 2^16397795827 is an apocalyptic number.

16397795827 is a deficient number, since it is larger than the sum of its proper divisors (3296652045).

16397795827 is a wasteful number, since it uses less digits than its factorization.

16397795827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472458.

The product of its digits is 40007520, while the sum is 64.

The spelling of 16397795827 in words is "sixteen billion, three hundred ninety-seven million, seven hundred ninety-five thousand, eight hundred twenty-seven".