16287997440000 has 1040 divisors, whose sum is σ = 63761268662784. Its totient is φ = 3644620800000.

The previous prime is 16287997439971. The next prime is 16287997440061. The reversal of 16287997440000 is 4479978261.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (1040).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1098232585 + ... + 1098247415.

Almost surely, 2^{16287997440000} is an apocalyptic number.

16287997440000 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 16287997440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31880634331392).

16287997440000 is an abundant number, since it is smaller than the sum of its proper divisors (47473271222784).

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

16287997440000 is a wasteful number, since it uses less digits than its factorization.

16287997440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14902 (or 14865 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 16287997440000 in words is "sixteen trillion, two hundred eighty-seven billion, nine hundred ninety-seven million, four hundred forty thousand".