16179856905 has 32 divisors (see below), whose sum is σ = 26494231680. Its totient is φ = 8429442560.

The previous prime is 16179856883. The next prime is 16179856921. The reversal of 16179856905 is 50965897161.

It is not a de Polignac number, because 16179856905 - 2²⁴ = 16163079689 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37795 + ... + 183815.

It is an arithmetic number, because the mean of its divisors is an integer number (827944740).

Almost surely, 2^16179856905 is an apocalyptic number.

16179856905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16179856905 is a deficient number, since it is larger than the sum of its proper divisors (10314374775).

16179856905 is a wasteful number, since it uses less digits than its factorization.

16179856905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146201.

The product of its (nonzero) digits is 4082400, while the sum is 57.

The spelling of 16179856905 in words is "sixteen billion, one hundred seventy-nine million, eight hundred fifty-six thousand, nine hundred five".