45056561040121 has 4 divisors (see below), whose sum is σ = 45056587040244. Its totient is φ = 45056535040000.

The previous prime is 45056561040103. The next prime is 45056561040133. The reversal of 45056561040121 is 12104016565054.

45056561040121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 35949377808400 + 9107183231721 = 5995780^2 + 3017811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45056561040121 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45056561340121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10199560 + ... + 13933561.

It is an arithmetic number, because the mean of its divisors is an integer number (11264146760061).

Almost surely, 2^{45056561040121} is an apocalyptic number.

It is an amenable number.

45056561040121 is a deficient number, since it is larger than the sum of its proper divisors (26000123).

45056561040121 is a wasteful number, since it uses less digits than its factorization.

45056561040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26000122.

The product of its (nonzero) digits is 144000, while the sum is 40.

The spelling of 45056561040121 in words is "forty-five trillion, fifty-six billion, five hundred sixty-one million, forty thousand, one hundred twenty-one".