7963397520 has 320 divisors, whose sum is σ = 27614732544. Its totient is φ = 1885593600.

The previous prime is 7963397509. The next prime is 7963397539. The reversal of 7963397520 is 257933697.

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, 11659099 + ... + 11659781.

Almost surely, 2^7963397520 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 7963397520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13807366272).

7963397520 is an abundant number, since it is smaller than the sum of its proper divisors (19651335024).

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

7963397520 is a wasteful number, since it uses less digits than its factorization.

7963397520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 844 counting only the distinct ones).

The product of its (nonzero) digits is 2143260, while the sum is 51.

The square root of 7963397520 is about 89237.8704362671. The cubic root of 7963397520 is about 1996.9451295925.

The spelling of 7963397520 in words is "seven billion, nine hundred sixty-three million, three hundred ninety-seven thousand, five hundred twenty".