105324320545 has 4 divisors (see below), whose sum is σ = 126389184660. Its totient is φ = 84259456432.

The previous prime is 105324320533. The next prime is 105324320551. The reversal of 105324320545 is 545023423501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41048380816 + 64275939729 = 202604^2 + 253527^2 .

It is a cyclic number.

It is not a de Polignac number, because 105324320545 - 2¹⁹ = 105323796257 is a prime.

It is a super-2 number, since 2×105324320545² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105324320545.

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, 10532432050 + ... + 10532432059.

It is an arithmetic number, because the mean of its divisors is an integer number (31597296165).

Almost surely, 2^105324320545 is an apocalyptic number.

It is an amenable number.

105324320545 is a deficient number, since it is larger than the sum of its proper divisors (21064864115).

105324320545 is an equidigital number, since it uses as much as digits as its factorization.

105324320545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21064864114.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 105324320545 in words is "one hundred five billion, three hundred twenty-four million, three hundred twenty thousand, five hundred forty-five".