115636781133 has 24 divisors (see below), whose sum is σ = 171567535776. Its totient is φ = 74997900000.

The previous prime is 115636781107. The next prime is 115636781153. The reversal of 115636781133 is 331187636511.

115636781133 is a `hidden beast` number, since 1 + 1 + 5 + 636 + 7 + 8 + 1 + 1 + 3 + 3 = 666.

It is not a de Polignac number, because 115636781133 - 2⁵ = 115636781101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115636781153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3262758 + ... + 3298008.

It is an arithmetic number, because the mean of its divisors is an integer number (7148647324).

Almost surely, 2^115636781133 is an apocalyptic number.

It is an amenable number.

115636781133 is a deficient number, since it is larger than the sum of its proper divisors (55930754643).

115636781133 is a wasteful number, since it uses less digits than its factorization.

115636781133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45145 (or 45142 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The spelling of 115636781133 in words is "one hundred fifteen billion, six hundred thirty-six million, seven hundred eighty-one thousand, one hundred thirty-three".