16039694954400 has 864 divisors, whose sum is σ = 57387688952832. Its totient is φ = 3888931737600.

The previous prime is 16039694954329. The next prime is 16039694954497. The reversal of 16039694954400 is 445949693061.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 17606689945 + ... + 17606690855.

It is an arithmetic number, because the mean of its divisors is an integer number (66420936288).

Almost surely, 2^{16039694954400} is an apocalyptic number.

16039694954400 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 16039694954400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28693844476416).

16039694954400 is an abundant number, since it is smaller than the sum of its proper divisors (41347993998432).

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

16039694954400 is a wasteful number, since it uses less digits than its factorization.

16039694954400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 60.

The spelling of 16039694954400 in words is "sixteen trillion, thirty-nine billion, six hundred ninety-four million, nine hundred fifty-four thousand, four hundred".