115844687885 has 16 divisors (see below), whose sum is σ = 147348086256. Its totient is φ = 87131086848.

The previous prime is 115844687869. The next prime is 115844687911. The reversal of 115844687885 is 588786448511.

It can be written as a sum of positive squares in 8 ways, for example, as 28552212676 + 87292475209 = 168974^2 + 295453^2 .

It is a cyclic number.

It is not a de Polignac number, because 115844687885 - 2⁴ = 115844687869 is a prime.

It is a super-2 number, since 2×115844687885² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 647612 + ... + 806901.

It is an arithmetic number, because the mean of its divisors is an integer number (9209255391).

Almost surely, 2^115844687885 is an apocalyptic number.

It is an amenable number.

115844687885 is a deficient number, since it is larger than the sum of its proper divisors (31503398371).

115844687885 is a wasteful number, since it uses less digits than its factorization.

115844687885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1455472.

The product of its digits is 68812800, while the sum is 65.

The spelling of 115844687885 in words is "one hundred fifteen billion, eight hundred forty-four million, six hundred eighty-seven thousand, eight hundred eighty-five".