105815087086 has 16 divisors (see below), whose sum is σ = 166288135680. Its totient is φ = 50436654840.

The previous prime is 105815087083. The next prime is 105815087087. The reversal of 105815087086 is 680780518501.

It is a happy number.

It is a super-2 number, since 2×105815087086² (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 (105815087083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12732376 + ... + 12740683.

It is an arithmetic number, because the mean of its divisors is an integer number (10393008480).

Almost surely, 2^105815087086 is an apocalyptic number.

105815087086 is a deficient number, since it is larger than the sum of its proper divisors (60473048594).

105815087086 is a wasteful number, since it uses less digits than its factorization.

105815087086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25473159.

The product of its (nonzero) digits is 537600, while the sum is 49.

The spelling of 105815087086 in words is "one hundred five billion, eight hundred fifteen million, eighty-seven thousand, eighty-six".