105555628085 has 4 divisors (see below), whose sum is σ = 126666753708. Its totient is φ = 84444502464.

The previous prime is 105555628067. The next prime is 105555628093. The reversal of 105555628085 is 580826555501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78793612804 + 26762015281 = 280702^2 + 163591^2 .

It is a cyclic number.

It is not a de Polignac number, because 105555628085 - 2¹² = 105555623989 is a prime.

It is a super-2 number, since 2×105555628085² (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 3 ways as a sum of consecutive naturals, for example, 10555562804 + ... + 10555562813.

It is an arithmetic number, because the mean of its divisors is an integer number (31666688427).

Almost surely, 2^105555628085 is an apocalyptic number.

It is an amenable number.

105555628085 is a deficient number, since it is larger than the sum of its proper divisors (21111125623).

105555628085 is an equidigital number, since it uses as much as digits as its factorization.

105555628085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21111125622.

The product of its (nonzero) digits is 2400000, while the sum is 50.

The spelling of 105555628085 in words is "one hundred five billion, five hundred fifty-five million, six hundred twenty-eight thousand, eighty-five".