1449997987800 has 384 divisors, whose sum is σ = 4655177049600. Its totient is φ = 373179555840.

The previous prime is 1449997987783. The next prime is 1449997987819. The reversal of 1449997987800 is 87897999441.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 499481149 + ... + 499484051.

It is an arithmetic number, because the mean of its divisors is an integer number (12122856900).

Almost surely, 2^{1449997987800} is an apocalyptic number.

1449997987800 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 1449997987800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2327588524800).

1449997987800 is an abundant number, since it is smaller than the sum of its proper divisors (3205179061800).

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

1449997987800 is a wasteful number, since it uses less digits than its factorization.

1449997987800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3227 (or 3218 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 75.

The spelling of 1449997987800 in words is "one trillion, four hundred forty-nine billion, nine hundred ninety-seven million, nine hundred eighty-seven thousand, eight hundred".