45418920917 has 2 divisors, whose sum is σ = 45418920918. Its totient is φ = 45418920916.

The previous prime is 45418920913. The next prime is 45418920929. The reversal of 45418920917 is 71902981454.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34123695076 + 11295225841 = 184726^2 + 106279^2 .

It is a cyclic number.

It is not a de Polignac number, because 45418920917 - 2² = 45418920913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45418920913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22709460458 + 22709460459.

It is an arithmetic number, because the mean of its divisors is an integer number (22709460459).

Almost surely, 2^45418920917 is an apocalyptic number.

It is an amenable number.

45418920917 is a deficient number, since it is larger than the sum of its proper divisors (1).

45418920917 is an equidigital number, since it uses as much as digits as its factorization.

45418920917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 45418920917 in words is "forty-five billion, four hundred eighteen million, nine hundred twenty thousand, nine hundred seventeen".