7750081920 has 256 divisors, whose sum is σ = 28835481600. Its totient is φ = 1733615616.

The previous prime is 7750081897. The next prime is 7750081943. The reversal of 7750081920 is 291800577.

It is an interprime number because it is at equal distance from previous prime (7750081897) and next prime (7750081943).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 625546 + ... + 637814.

It is an arithmetic number, because the mean of its divisors is an integer number (112638600).

Almost surely, 2^7750081920 is an apocalyptic number.

7750081920 is a gapful number since it is divisible by the number (70) 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 7750081920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14417740800).

7750081920 is an abundant number, since it is smaller than the sum of its proper divisors (21085399680).

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

7750081920 is a wasteful number, since it uses less digits than its factorization.

7750081920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12345 (or 12333 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 7750081920 is about 88034.5495814001. The cubic root of 7750081920 is about 1978.9527775141.

The spelling of 7750081920 in words is "seven billion, seven hundred fifty million, eighty-one thousand, nine hundred twenty".