105179478909 has 4 divisors (see below), whose sum is σ = 140239305216. Its totient is φ = 70119652604.

The previous prime is 105179478869. The next prime is 105179478949. The reversal of 105179478909 is 909874971501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 909874971501 = 3 ⋅303291657167.

It is an interprime number because it is at equal distance from previous prime (105179478869) and next prime (105179478949).

It is a cyclic number.

It is not a de Polignac number, because 105179478909 - 2¹³ = 105179470717 is a prime.

It is a super-2 number, since 2×105179478909² (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 (105179478949) 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, 17529913149 + ... + 17529913154.

It is an arithmetic number, because the mean of its divisors is an integer number (35059826304).

Almost surely, 2^105179478909 is an apocalyptic number.

It is an amenable number.

105179478909 is a deficient number, since it is larger than the sum of its proper divisors (35059826307).

105179478909 is an equidigital number, since it uses as much as digits as its factorization.

105179478909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35059826306.

The product of its (nonzero) digits is 5715360, while the sum is 60.

The spelling of 105179478909 in words is "one hundred five billion, one hundred seventy-nine million, four hundred seventy-eight thousand, nine hundred nine".