105918539886 has 24 divisors (see below), whose sum is σ = 241568600520. Its totient is φ = 33447959856.

The previous prime is 105918539863. The next prime is 105918539887. The reversal of 105918539886 is 688935819501.

105918539886 is a `hidden beast` number, since 1 + 0 + 5 + 9 + 18 + 539 + 8 + 86 = 666.

105918539886 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×105918539886² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105918539887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154851325 + ... + 154852008.

It is an arithmetic number, because the mean of its divisors is an integer number (10065358355).

Almost surely, 2^105918539886 is an apocalyptic number.

105918539886 is an abundant number, since it is smaller than the sum of its proper divisors (135650060634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105918539886 is a wasteful number, since it uses less digits than its factorization.

105918539886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309703360 (or 309703357 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 63.

The spelling of 105918539886 in words is "one hundred five billion, nine hundred eighteen million, five hundred thirty-nine thousand, eight hundred eighty-six".