16493990944 has 48 divisors (see below), whose sum is σ = 33581350656. Its totient is φ = 7966368000.

The previous prime is 16493990939. The next prime is 16493990957. The reversal of 16493990944 is 44909939461.

It is a super-2 number, since 2×16493990944² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537619 + ... + 567469.

It is an arithmetic number, because the mean of its divisors is an integer number (699611472).

Almost surely, 2^16493990944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16493990944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16790675328).

16493990944 is an abundant number, since it is smaller than the sum of its proper divisors (17087359712).

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

16493990944 is a wasteful number, since it uses less digits than its factorization.

16493990944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30449 (or 30441 counting only the distinct ones).

The product of its (nonzero) digits is 7558272, while the sum is 58.

The spelling of 16493990944 in words is "sixteen billion, four hundred ninety-three million, nine hundred ninety thousand, nine hundred forty-four".