115591885808378 has 96 divisors (see below), whose sum is σ = 204309498690000. Its totient is φ = 48899446751232.

The previous prime is 115591885808309. The next prime is 115591885808407. The reversal of 115591885808378 is 873808588195511.

It can be written as a sum of positive squares in 8 ways, for example, as 29985294629689 + 85606591178689 = 5475883^2 + 9252383^2 .

It is a super-2 number, since 2×115591885808378² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115591885808299 and 115591885808308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16926616268 + ... + 16926623096.

Almost surely, 2^{115591885808378} is an apocalyptic number.

115591885808378 is a deficient number, since it is larger than the sum of its proper divisors (88717612881622).

115591885808378 is a wasteful number, since it uses less digits than its factorization.

115591885808378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9952 (or 9945 counting only the distinct ones).

The product of its (nonzero) digits is 774144000, while the sum is 77.

The spelling of 115591885808378 in words is "one hundred fifteen trillion, five hundred ninety-one billion, eight hundred eighty-five million, eight hundred eight thousand, three hundred seventy-eight".