5981423437520 has 90 divisors (see below), whose sum is σ = 14239984269618. Its totient is φ = 2336560727424.

The previous prime is 5981423437427. The next prime is 5981423437537. The reversal of 5981423437520 is 257343241895.

It can be written as a sum of positive squares in only one way, i.e., 4785138750016 + 1196284687504 = 2187496^2 + 1093748^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 940620101 + ... + 940626459.

Almost surely, 2^{5981423437520} 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 5981423437520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7119992134809).

5981423437520 is an abundant number, since it is smaller than the sum of its proper divisors (8258560832098).

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

5981423437520 is an frugal number, since it uses more digits than its factorization.

5981423437520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12817 (or 6409 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 53.

The spelling of 5981423437520 in words is "five trillion, nine hundred eighty-one billion, four hundred twenty-three million, four hundred thirty-seven thousand, five hundred twenty".