45111050209 has 2 divisors, whose sum is σ = 45111050210. Its totient is φ = 45111050208.

The previous prime is 45111050107. The next prime is 45111050233. The reversal of 45111050209 is 90205011154.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29460289600 + 15650760609 = 171640^2 + 125103^2 .

It is a cyclic number.

It is not a de Polignac number, because 45111050209 - 2¹⁷ = 45110919137 is a prime.

It is not a weakly prime, because it can be changed into another prime (45111050269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22555525104 + 22555525105.

It is an arithmetic number, because the mean of its divisors is an integer number (22555525105).

Almost surely, 2^45111050209 is an apocalyptic number.

It is an amenable number.

45111050209 is a deficient number, since it is larger than the sum of its proper divisors (1).

45111050209 is an equidigital number, since it uses as much as digits as its factorization.

45111050209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 28.

The spelling of 45111050209 in words is "forty-five billion, one hundred eleven million, fifty thousand, two hundred nine".