13865591560 has 64 divisors (see below), whose sum is σ = 32343857280. Its totient is φ = 5345717760.

The previous prime is 13865591533. The next prime is 13865591581. The reversal of 13865591560 is 6519556831.

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, 85189 + ... + 187051.

It is an arithmetic number, because the mean of its divisors is an integer number (505372770).

Almost surely, 2^13865591560 is an apocalyptic number.

13865591560 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 13865591560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16171928640).

13865591560 is an abundant number, since it is smaller than the sum of its proper divisors (18478265720).

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

13865591560 is a wasteful number, since it uses less digits than its factorization.

13865591560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101998 (or 101994 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 13865591560 in words is "thirteen billion, eight hundred sixty-five million, five hundred ninety-one thousand, five hundred sixty".