45164444256161 has 4 divisors (see below), whose sum is σ = 45164660632212. Its totient is φ = 45164227880112.

The previous prime is 45164444256143. The next prime is 45164444256187. The reversal of 45164444256161 is 16165244446154.

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 6344454192400 + 38819990063761 = 2518820^2 + 6230569^2 .

It is a cyclic number.

It is not a de Polignac number, because 45164444256161 - 2³⁰ = 45163370514337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45164444246161) 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 3 ways as a sum of consecutive naturals, for example, 107874626 + ... + 108292491.

It is an arithmetic number, because the mean of its divisors is an integer number (11291165158053).

Almost surely, 2^{45164444256161} is an apocalyptic number.

It is an amenable number.

45164444256161 is a deficient number, since it is larger than the sum of its proper divisors (216376051).

45164444256161 is a wasteful number, since it uses less digits than its factorization.

45164444256161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216376050.

The product of its digits is 11059200, while the sum is 53.

The spelling of 45164444256161 in words is "forty-five trillion, one hundred sixty-four billion, four hundred forty-four million, two hundred fifty-six thousand, one hundred sixty-one".