7991850880 has 256 divisors, whose sum is σ = 21245898240. Its totient is φ = 2856591360.

The previous prime is 7991850877. The next prime is 7991850899. The reversal of 7991850880 is 880581997.

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, 49029679 + ... + 49029841.

It is an arithmetic number, because the mean of its divisors is an integer number (82991790).

Almost surely, 2^7991850880 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 7991850880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10622949120).

7991850880 is an abundant number, since it is smaller than the sum of its proper divisors (13254047360).

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

7991850880 is a wasteful number, since it uses less digits than its factorization.

7991850880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 55.

The square root of 7991850880 is about 89397.1525273596. The cubic root of 7991850880 is about 1999.3206759522.

The spelling of 7991850880 in words is "seven billion, nine hundred ninety-one million, eight hundred fifty thousand, eight hundred eighty".