16399974744000 has 1568 divisors, whose sum is σ = 63060375897792. Its totient is φ = 4220190720000.

The previous prime is 16399974743989. The next prime is 16399974744073. The reversal of 16399974744000 is 44747999361.

16399974744000 is a `hidden beast` number, since 1 + 6 + 3 + 9 + 99 + 74 + 74 + 400 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 25584983680 + ... + 25584984320.

Almost surely, 2^{16399974744000} is an apocalyptic number.

16399974744000 is a gapful number since it is divisible by the number (10) 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 16399974744000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31530187948896).

16399974744000 is an abundant number, since it is smaller than the sum of its proper divisors (46660401153792).

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

16399974744000 is an equidigital number, since it uses as much as digits as its factorization.

16399974744000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834 (or 799 counting only the distinct ones).

The product of its (nonzero) digits is 41150592, while the sum is 63.

The spelling of 16399974744000 in words is "sixteen trillion, three hundred ninety-nine billion, nine hundred seventy-four million, seven hundred forty-four thousand".