133813565889 has 16 divisors (see below), whose sum is σ = 179622940224. Its totient is φ = 88607822400.

The previous prime is 133813565887. The next prime is 133813565903. The reversal of 133813565889 is 988565318331.

It is not a de Polignac number, because 133813565889 - 2¹ = 133813565887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133813565887) 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, 295722 + ... + 595884.

It is an arithmetic number, because the mean of its divisors is an integer number (11226433764).

Almost surely, 2^133813565889 is an apocalyptic number.

It is an amenable number.

133813565889 is a deficient number, since it is larger than the sum of its proper divisors (45809374335).

133813565889 is a wasteful number, since it uses less digits than its factorization.

133813565889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301168.

The product of its digits is 18662400, while the sum is 60.

The spelling of 133813565889 in words is "one hundred thirty-three billion, eight hundred thirteen million, five hundred sixty-five thousand, eight hundred eighty-nine".