105604564645 has 4 divisors (see below), whose sum is σ = 126725477580. Its totient is φ = 84483651712.

The previous prime is 105604564531. The next prime is 105604564697. The reversal of 105604564645 is 546465406501.

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 57885472836 + 47719091809 = 240594^2 + 218447^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105604564645 is a prime.

It is a super-2 number, since 2×105604564645² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105604564595 and 105604564604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10560456460 + ... + 10560456469.

It is an arithmetic number, because the mean of its divisors is an integer number (31681369395).

Almost surely, 2^105604564645 is an apocalyptic number.

It is an amenable number.

105604564645 is a deficient number, since it is larger than the sum of its proper divisors (21120912935).

105604564645 is an equidigital number, since it uses as much as digits as its factorization.

105604564645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21120912934.

The product of its (nonzero) digits is 1728000, while the sum is 46.

The spelling of 105604564645 in words is "one hundred five billion, six hundred four million, five hundred sixty-four thousand, six hundred forty-five".