133865085864 has 16 divisors (see below), whose sum is σ = 334662714720. Its totient is φ = 44621695280.

The previous prime is 133865085853. The next prime is 133865085929. The reversal of 133865085864 is 468580568331.

133865085864 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×133865085864² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2788855932 + ... + 2788855979.

It is an arithmetic number, because the mean of its divisors is an integer number (20916419670).

Almost surely, 2^133865085864 is an apocalyptic number.

It is an amenable number.

133865085864 is an abundant number, since it is smaller than the sum of its proper divisors (200797628856).

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

133865085864 is a wasteful number, since it uses less digits than its factorization.

133865085864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577711920 (or 5577711916 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 57.

The spelling of 133865085864 in words is "one hundred thirty-three billion, eight hundred sixty-five million, eighty-five thousand, eight hundred sixty-four".