105185085079 has 4 divisors (see below), whose sum is σ = 105230173176. Its totient is φ = 105139996984.

The previous prime is 105185085011. The next prime is 105185085097. The reversal of 105185085079 is 970580581501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 970580581501 = 1051 ⋅923482951.

It is a cyclic number.

It is not a de Polignac number, because 105185085079 - 2⁹ = 105185084567 is a prime.

It is a super-2 number, since 2×105185085079² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105185065079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22540549 + ... + 22545214.

It is an arithmetic number, because the mean of its divisors is an integer number (26307543294).

Almost surely, 2^105185085079 is an apocalyptic number.

105185085079 is a deficient number, since it is larger than the sum of its proper divisors (45088097).

105185085079 is an equidigital number, since it uses as much as digits as its factorization.

105185085079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45088096.

The product of its (nonzero) digits is 504000, while the sum is 49.

The spelling of 105185085079 in words is "one hundred five billion, one hundred eighty-five million, eighty-five thousand, seventy-nine".