115631442005 has 12 divisors (see below), whose sum is σ = 138852646212. Its totient is φ = 92441917440.

The previous prime is 115631441971. The next prime is 115631442019. The reversal of 115631442005 is 500244136511.

It can be written as a sum of positive squares in 6 ways, for example, as 4183631761 + 111447810244 = 64681^2 + 333838^2 .

It is not a de Polignac number, because 115631442005 - 2⁶ = 115631441941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17838365 + ... + 17844845.

It is an arithmetic number, because the mean of its divisors is an integer number (11571053851).

Almost surely, 2^115631442005 is an apocalyptic number.

It is an amenable number.

115631442005 is a deficient number, since it is larger than the sum of its proper divisors (23221204207).

115631442005 is an frugal number, since it uses more digits than its factorization.

115631442005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264 (or 8375 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 115631442005 its reverse (500244136511), we get a palindrome (615875578516).

The spelling of 115631442005 in words is "one hundred fifteen billion, six hundred thirty-one million, four hundred forty-two thousand, five".