7991226883488 has 384 divisors, whose sum is σ = 22241705988096. Its totient is φ = 2509361971200.

The previous prime is 7991226883481. The next prime is 7991226883513. The reversal of 7991226883488 is 8843886221997.

It is a super-2 number, since 2×7991226883488² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7991226883481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8810613531 + ... + 8810614437.

It is an arithmetic number, because the mean of its divisors is an integer number (57921109344).

Almost surely, 2^{7991226883488} 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 7991226883488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11120852994048).

7991226883488 is an abundant number, since it is smaller than the sum of its proper divisors (14250479104608).

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

7991226883488 is a wasteful number, since it uses less digits than its factorization.

7991226883488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596 (or 1588 counting only the distinct ones).

The product of its digits is 668860416, while the sum is 75.

The spelling of 7991226883488 in words is "seven trillion, nine hundred ninety-one billion, two hundred twenty-six million, eight hundred eighty-three thousand, four hundred eighty-eight".