115643235521331 has 96 divisors (see below), whose sum is σ = 205862640721920. Its totient is φ = 61100280806400.

The previous prime is 115643235521321. The next prime is 115643235521381. The reversal of 115643235521331 is 133125532346511.

115643235521331 is a `hidden beast` number, since 1 + 1 + 5 + 6 + 43 + 23 + 552 + 1 + 3 + 31 = 666.

It is not a de Polignac number, because 115643235521331 - 2¹⁵ = 115643235488563 is a prime.

It is a super-2 number, since 2×115643235521331² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115643235521321) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 38112525 + ... + 41034753.

It is an arithmetic number, because the mean of its divisors is an integer number (2144402507520).

Almost surely, 2^{115643235521331} is an apocalyptic number.

115643235521331 is a deficient number, since it is larger than the sum of its proper divisors (90219405200589).

115643235521331 is a wasteful number, since it uses less digits than its factorization.

115643235521331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923177 (or 2923174 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

Adding to 115643235521331 its reverse (133125532346511), we get a palindrome (248768767867842).

The spelling of 115643235521331 in words is "one hundred fifteen trillion, six hundred forty-three billion, two hundred thirty-five million, five hundred twenty-one thousand, three hundred thirty-one".