16490944512 has 648 divisors, whose sum is σ = 60263084700. Its totient is φ = 4319723520.

The previous prime is 16490944487. The next prime is 16490944517. The reversal of 16490944512 is 21544909461.

16490944512 is a `hidden beast` number, since 1 + 6 + 4 + 90 + 9 + 44 + 512 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16490944517) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 531965937 + ... + 531965967.

Almost surely, 2^16490944512 is an apocalyptic number.

16490944512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16490944512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30131542350).

16490944512 is an abundant number, since it is smaller than the sum of its proper divisors (43772140188).

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

16490944512 is a wasteful number, since it uses less digits than its factorization.

16490944512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 16490944512 in words is "sixteen billion, four hundred ninety million, nine hundred forty-four thousand, five hundred twelve".