13386895866 has 64 divisors (see below), whose sum is σ = 30176778240. Its totient is φ = 4398332400.

The previous prime is 13386895861. The next prime is 13386895867. The reversal of 13386895866 is 66859868331.

13386895866 is a `hidden beast` number, since 13 + 38 + 6 + 8 + 9 + 586 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (13386895861) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2071941 + ... + 2078391.

It is an arithmetic number, because the mean of its divisors is an integer number (471512160).

Almost surely, 2^13386895866 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13386895866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15088389120).

13386895866 is an abundant number, since it is smaller than the sum of its proper divisors (16789882374).

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

13386895866 is a wasteful number, since it uses less digits than its factorization.

13386895866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7008 (or 7002 counting only the distinct ones).

The product of its digits is 44789760, while the sum is 63.

The spelling of 13386895866 in words is "thirteen billion, three hundred eighty-six million, eight hundred ninety-five thousand, eight hundred sixty-six".