16668996084 has 36 divisors (see below), whose sum is σ = 45376712836. Its totient is φ = 5128921728.

The previous prime is 16668996079. The next prime is 16668996107. The reversal of 16668996084 is 48069986661.

It can be written as a sum of positive squares in 2 ways, for example, as 8059011984 + 8609984100 = 89772^2 + 92790^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17808289 + ... + 17809224.

Almost surely, 2^16668996084 is an apocalyptic number.

It is an amenable number.

16668996084 is an abundant number, since it is smaller than the sum of its proper divisors (28707716752).

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

16668996084 is a wasteful number, since it uses less digits than its factorization.

16668996084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35617536 (or 35617531 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 16668996084 in words is "sixteen billion, six hundred sixty-eight million, nine hundred ninety-six thousand, eighty-four".