16686134772 has 48 divisors (see below), whose sum is σ = 40293926400. Its totient is φ = 5368740480.

The previous prime is 16686134771. The next prime is 16686134789. The reversal of 16686134772 is 27743168661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16686134771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87054 + ... + 202362.

It is an arithmetic number, because the mean of its divisors is an integer number (839456800).

Almost surely, 2^16686134772 is an apocalyptic number.

16686134772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16686134772 is an abundant number, since it is smaller than the sum of its proper divisors (23607791628).

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

16686134772 is a wasteful number, since it uses less digits than its factorization.

16686134772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115736 (or 115734 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The spelling of 16686134772 in words is "sixteen billion, six hundred eighty-six million, one hundred thirty-four thousand, seven hundred seventy-two".