16634939172 has 24 divisors (see below), whose sum is σ = 39640707456. Its totient is φ = 5427001248.

The previous prime is 16634939149. The next prime is 16634939183. The reversal of 16634939172 is 27193943661.

16634939172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×16634939172² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14746723 + ... + 14747850.

It is an arithmetic number, because the mean of its divisors is an integer number (1651696144).

Almost surely, 2^16634939172 is an apocalyptic number.

16634939172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16634939172 is an abundant number, since it is smaller than the sum of its proper divisors (23005768284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16634939172 is a wasteful number, since it uses less digits than its factorization.

16634939172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29494627 (or 29494625 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 51.

The spelling of 16634939172 in words is "sixteen billion, six hundred thirty-four million, nine hundred thirty-nine thousand, one hundred seventy-two".