1447990537728 has 320 divisors, whose sum is σ = 4870912527360. Its totient is φ = 372445151232.

The previous prime is 1447990537687. The next prime is 1447990537733. The reversal of 1447990537728 is 8277350997441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4031818 + ... + 4376246.

It is an arithmetic number, because the mean of its divisors is an integer number (15221601648).

Almost surely, 2^{1447990537728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1447990537728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2435456263680).

1447990537728 is an abundant number, since it is smaller than the sum of its proper divisors (3422921989632).

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

1447990537728 is a wasteful number, since it uses less digits than its factorization.

1447990537728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344497 (or 344481 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 66.

The spelling of 1447990537728 in words is "one trillion, four hundred forty-seven billion, nine hundred ninety million, five hundred thirty-seven thousand, seven hundred twenty-eight".