7915581960 has 256 divisors, whose sum is σ = 28256256000. Its totient is φ = 1748597760.

The previous prime is 7915581953. The next prime is 7915581983. The reversal of 7915581960 is 691855197.

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, 1352721 + ... + 1358559.

It is an arithmetic number, because the mean of its divisors is an integer number (110376000).

Almost surely, 2^7915581960 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 7915581960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14128128000).

7915581960 is an abundant number, since it is smaller than the sum of its proper divisors (20340674040).

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

7915581960 is a wasteful number, since it uses less digits than its factorization.

7915581960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5956 (or 5952 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 51.

The square root of 7915581960 is about 88969.5563662088. The cubic root of 7915581960 is about 1992.9402727804.

The spelling of 7915581960 in words is "seven billion, nine hundred fifteen million, five hundred eighty-one thousand, nine hundred sixty".