7901399221248 has 704 divisors, whose sum is σ = 25147106127360. Its totient is φ = 2184349483008.

The previous prime is 7901399221217. The next prime is 7901399221343. The reversal of 7901399221248 is 8421229931097.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 985576536 + ... + 985584552.

Almost surely, 2^{7901399221248} is an apocalyptic number.

7901399221248 is a gapful number since it is divisible by the number (78) 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 7901399221248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12573553063680).

7901399221248 is an abundant number, since it is smaller than the sum of its proper divisors (17245706906112).

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

7901399221248 is a wasteful number, since it uses less digits than its factorization.

7901399221248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8142 (or 8124 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 7901399221248 in words is "seven trillion, nine hundred one billion, three hundred ninety-nine million, two hundred twenty-one thousand, two hundred forty-eight".