16646877312 has 64 divisors (see below), whose sum is σ = 47619687360. Its totient is φ = 5122114560.

The previous prime is 16646877307. The next prime is 16646877323. The reversal of 16646877312 is 21377864661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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 7 ways as a sum of consecutive naturals, for example, 1662364 + ... + 1672347.

It is an arithmetic number, because the mean of its divisors is an integer number (744057615).

Almost surely, 2^16646877312 is an apocalyptic number.

16646877312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16646877312 is an abundant number, since it is smaller than the sum of its proper divisors (30972810048).

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

16646877312 is a wasteful number, since it uses less digits than its factorization.

16646877312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3334741 (or 3334729 counting only the distinct ones).

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

The spelling of 16646877312 in words is "sixteen billion, six hundred forty-six million, eight hundred seventy-seven thousand, three hundred twelve".