105805854087 has 8 divisors (see below), whose sum is σ = 143061436800. Its totient is φ = 69543753720.

The previous prime is 105805854071. The next prime is 105805854131. The reversal of 105805854087 is 780458508501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 105805854087 - 2⁴ = 105805854071 is a prime.

It is a super-2 number, since 2×105805854087² (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 (105805854487) 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, 248370337 + ... + 248370762.

It is an arithmetic number, because the mean of its divisors is an integer number (17882679600).

Almost surely, 2^105805854087 is an apocalyptic number.

105805854087 is a deficient number, since it is larger than the sum of its proper divisors (37255582713).

105805854087 is an equidigital number, since it uses as much as digits as its factorization.

105805854087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496741173.

The product of its (nonzero) digits is 1792000, while the sum is 51.

The spelling of 105805854087 in words is "one hundred five billion, eight hundred five million, eight hundred fifty-four thousand, eighty-seven".