105522172861 has 16 divisors (see below), whose sum is σ = 121887863680. Its totient is φ = 89481775680.

The previous prime is 105522172859. The next prime is 105522172867. The reversal of 105522172861 is 168271225501.

It is a cyclic number.

It is not a de Polignac number, because 105522172861 - 2¹ = 105522172859 is a prime.

It is a super-2 number, since 2×105522172861² (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 (105522172867) 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 15 ways as a sum of consecutive naturals, for example, 399730 + ... + 608956.

It is an arithmetic number, because the mean of its divisors is an integer number (7617991480).

Almost surely, 2^105522172861 is an apocalyptic number.

It is an amenable number.

105522172861 is a deficient number, since it is larger than the sum of its proper divisors (16365690819).

105522172861 is a wasteful number, since it uses less digits than its factorization.

105522172861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210004.

The product of its (nonzero) digits is 67200, while the sum is 40.

The spelling of 105522172861 in words is "one hundred five billion, five hundred twenty-two million, one hundred seventy-two thousand, eight hundred sixty-one".