115665064000 has 112 divisors (see below), whose sum is σ = 286928478720. Its totient is φ = 46187865600.

The previous prime is 115665063977. The next prime is 115665064003. The reversal of 115665064000 is 460566511.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (115665064003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4844091 + ... + 4867909.

Almost surely, 2^115665064000 is an apocalyptic number.

115665064000 is a gapful number since it is divisible by the number (10) 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 115665064000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143464239360).

115665064000 is an abundant number, since it is smaller than the sum of its proper divisors (171263414720).

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

115665064000 is an equidigital number, since it uses as much as digits as its factorization.

115665064000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24453 (or 24433 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 115665064000 in words is "one hundred fifteen billion, six hundred sixty-five million, sixty-four thousand".