7999758720 has 256 divisors, whose sum is σ = 28454328000. Its totient is φ = 2124103680.

The previous prime is 7999758707. The next prime is 7999758733. The reversal of 7999758720 is 278579997.

It is an interprime number because it is at equal distance from previous prime (7999758707) and next prime (7999758733).

It is a super-2 number, since 2×7999758720² (a number of 21 digits) contains 22 as substring.

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, 4647460 + ... + 4649180.

Almost surely, 2^7999758720 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 7999758720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14227164000).

7999758720 is an abundant number, since it is smaller than the sum of its proper divisors (20454569280).

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

7999758720 is a wasteful number, since it uses less digits than its factorization.

7999758720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 20003760, while the sum is 63.

The square root of 7999758720 is about 89441.3702936175. The cubic root of 7999758720 is about 1999.9798931312.

The spelling of 7999758720 in words is "seven billion, nine hundred ninety-nine million, seven hundred fifty-eight thousand, seven hundred twenty".