7997233331844 has 243 divisors, whose sum is σ = 21098545025103. Its totient is φ = 2554103107584.

The previous prime is 7997233331821. The next prime is 7997233331849. The reversal of 7997233331844 is 4481333327997.

It is a happy number.

The square root of 7997233331844 is 2827938.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3345101997444 + 4652131334400 = 1828962^2 + 2156880^2 .

It is not an unprimeable number, because it can be changed into a prime (7997233331849) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 70771976332 + ... + 70771976444.

Almost surely, 2^{7997233331844} is an apocalyptic number.

7997233331844 is the 2827938-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7997233331844

7997233331844 is an abundant number, since it is smaller than the sum of its proper divisors (13101311693259).

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

7997233331844 is a wasteful number, since it uses less digits than its factorization.

7997233331844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 258 counting only the distinct ones).

The product of its digits is 82301184, while the sum is 63.

The spelling of 7997233331844 in words is "seven trillion, nine hundred ninety-seven billion, two hundred thirty-three million, three hundred thirty-one thousand, eight hundred forty-four".