45056144917 has 4 divisors (see below), whose sum is σ = 51492737056. Its totient is φ = 38619552780.

The previous prime is 45056144897. The next prime is 45056144933. The reversal of 45056144917 is 71944165054.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71944165054 = 2 ⋅35972082527.

It is a cyclic number.

It is not a de Polignac number, because 45056144917 - 2¹⁵ = 45056112149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45056144957) 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, 3218296059 + ... + 3218296072.

It is an arithmetic number, because the mean of its divisors is an integer number (12873184264).

Almost surely, 2^45056144917 is an apocalyptic number.

It is an amenable number.

45056144917 is a deficient number, since it is larger than the sum of its proper divisors (6436592139).

45056144917 is an equidigital number, since it uses as much as digits as its factorization.

45056144917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6436592138.

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 45056144917 in words is "forty-five billion, fifty-six million, one hundred forty-four thousand, nine hundred seventeen".