105520660172 has 12 divisors (see below), whose sum is σ = 184693083456. Its totient is φ = 52751207760.

The previous prime is 105520660139. The next prime is 105520660181. The reversal of 105520660172 is 271066025501.

It is a super-2 number, since 2×105520660172² (a number of 23 digits) contains 22 as substring.

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, 2254523 + ... + 2300850.

It is an arithmetic number, because the mean of its divisors is an integer number (15391090288).

Almost surely, 2^105520660172 is an apocalyptic number.

It is an amenable number.

105520660172 is a deficient number, since it is larger than the sum of its proper divisors (79172423284).

105520660172 is a wasteful number, since it uses less digits than its factorization.

105520660172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561168 (or 4561166 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

Adding to 105520660172 its reverse (271066025501), we get a palindrome (376586685673).

The spelling of 105520660172 in words is "one hundred five billion, five hundred twenty million, six hundred sixty thousand, one hundred seventy-two".