16331994660 has 48 divisors (see below), whose sum is σ = 46280558016. Its totient is φ = 4302724992.

The previous prime is 16331994643. The next prime is 16331994661. The reversal of 16331994660 is 6649913361.

It is not an unprimeable number, because it can be changed into a prime (16331994661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634779 + ... + 1644738.

It is an arithmetic number, because the mean of its divisors is an integer number (964178292).

Almost surely, 2^16331994660 is an apocalyptic number.

16331994660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16331994660 is an abundant number, since it is smaller than the sum of its proper divisors (29948563356).

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

16331994660 is a wasteful number, since it uses less digits than its factorization.

16331994660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3279612 (or 3279610 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The spelling of 16331994660 in words is "sixteen billion, three hundred thirty-one million, nine hundred ninety-four thousand, six hundred sixty".