865601500560 has 80 divisors (see below), whose sum is σ = 2683459170240. Its totient is φ = 230818936320.

The previous prime is 865601500553. The next prime is 865601500571. The reversal of 865601500560 is 65005106568.

865601500560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10236855 + ... + 10321065.

It is an arithmetic number, because the mean of its divisors is an integer number (33543239628).

Almost surely, 2^865601500560 is an apocalyptic number.

865601500560 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

865601500560 is an abundant number, since it is smaller than the sum of its proper divisors (1817857669680).

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

865601500560 is a wasteful number, since it uses less digits than its factorization.

865601500560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127056 (or 127050 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 865601500560 in words is "eight hundred sixty-five billion, six hundred one million, five hundred thousand, five hundred sixty".