45544534121 has 4 divisors (see below), whose sum is σ = 45572771652. Its totient is φ = 45516296592.

The previous prime is 45544534111. The next prime is 45544534157. The reversal of 45544534121 is 12143544554.

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 30019374121 + 15525160000 = 173261^2 + 124600^2 .

It is a cyclic number.

It is not a de Polignac number, because 45544534121 - 2¹⁴ = 45544517737 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45544534111) by changing a digit.

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, 14116346 + ... + 14119571.

It is an arithmetic number, because the mean of its divisors is an integer number (11393192913).

Almost surely, 2^45544534121 is an apocalyptic number.

It is an amenable number.

45544534121 is a deficient number, since it is larger than the sum of its proper divisors (28237531).

45544534121 is a wasteful number, since it uses less digits than its factorization.

45544534121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28237530.

The product of its digits is 192000, while the sum is 38.

The spelling of 45544534121 in words is "forty-five billion, five hundred forty-four million, five hundred thirty-four thousand, one hundred twenty-one".