16631728316 has 12 divisors (see below), whose sum is σ = 33263456688. Its totient is φ = 7127883552.

The previous prime is 16631728307. The next prime is 16631728331. The reversal of 16631728316 is 61382713661.

16631728316 is an admirable number.

It is a super-2 number, since 2×16631728316² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296995121 + ... + 296995176.

It is an arithmetic number, because the mean of its divisors is an integer number (2771954724).

Almost surely, 2^16631728316 is an apocalyptic number.

It is an amenable number.

16631728316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16631728316 is a wasteful number, since it uses less digits than its factorization.

16631728316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593990308 (or 593990306 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The spelling of 16631728316 in words is "sixteen billion, six hundred thirty-one million, seven hundred twenty-eight thousand, three hundred sixteen".