45164444256185 has 4 divisors (see below), whose sum is σ = 54197333107428. Its totient is φ = 36131555404944.

The previous prime is 45164444256143. The next prime is 45164444256187. The reversal of 45164444256185 is 58165244446154.

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 22220928632464 + 22943515623721 = 4713908^2 + 4789939^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45164444256185 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45164444256187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4516444425614 + ... + 4516444425623.

It is an arithmetic number, because the mean of its divisors is an integer number (13549333276857).

Almost surely, 2^{45164444256185} is an apocalyptic number.

It is an amenable number.

45164444256185 is a deficient number, since it is larger than the sum of its proper divisors (9032888851243).

45164444256185 is an equidigital number, since it uses as much as digits as its factorization.

45164444256185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9032888851242.

The product of its digits is 73728000, while the sum is 59.

The spelling of 45164444256185 in words is "forty-five trillion, one hundred sixty-four billion, four hundred forty-four million, two hundred fifty-six thousand, one hundred eighty-five".