105522173661 has 4 divisors (see below), whose sum is σ = 140696231552. Its totient is φ = 70348115772.

The previous prime is 105522173651. The next prime is 105522173681. The reversal of 105522173661 is 166371225501.

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.

It is not a de Polignac number, because 105522173661 - 2⁹ = 105522173149 is a prime.

It is a super-2 number, since 2×105522173661² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105522173651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17587028941 + ... + 17587028946.

It is an arithmetic number, because the mean of its divisors is an integer number (35174057888).

Almost surely, 2^105522173661 is an apocalyptic number.

It is an amenable number.

105522173661 is a deficient number, since it is larger than the sum of its proper divisors (35174057891).

105522173661 is an equidigital number, since it uses as much as digits as its factorization.

105522173661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35174057890.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 105522173661 in words is "one hundred five billion, five hundred twenty-two million, one hundred seventy-three thousand, six hundred sixty-one".