105865260857 has 8 divisors (see below), whose sum is σ = 107068842720. Its totient is φ = 104661992160.

The previous prime is 105865260841. The next prime is 105865260877. The reversal of 105865260857 is 758062568501.

It is a happy number.

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

It is not a de Polignac number, because 105865260857 - 2⁴ = 105865260841 is a prime.

It is a super-2 number, since 2×105865260857² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105865260799 and 105865260808.

It is not an unprimeable number, because it can be changed into a prime (105865260817) 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, 638738 + ... + 787220.

It is an arithmetic number, because the mean of its divisors is an integer number (13383605340).

Almost surely, 2^105865260857 is an apocalyptic number.

It is an amenable number.

105865260857 is a deficient number, since it is larger than the sum of its proper divisors (1203581863).

105865260857 is an equidigital number, since it uses as much as digits as its factorization.

105865260857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156583.

The product of its (nonzero) digits is 4032000, while the sum is 53.

The spelling of 105865260857 in words is "one hundred five billion, eight hundred sixty-five million, two hundred sixty thousand, eight hundred fifty-seven".