45040444243073 has 2 divisors, whose sum is σ = 45040444243074. Its totient is φ = 45040444243072.

The previous prime is 45040444243013. The next prime is 45040444243103. The reversal of 45040444243073 is 37034244404054.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44135069156929 + 905375086144 = 6643423^2 + 951512^2 .

It is a cyclic number.

It is not a de Polignac number, because 45040444243073 - 2⁸ = 45040444242817 is a prime.

It is a super-2 number, since 2×45040444243073² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45040444243013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22520222121536 + 22520222121537.

It is an arithmetic number, because the mean of its divisors is an integer number (22520222121537).

Almost surely, 2^{45040444243073} is an apocalyptic number.

It is an amenable number.

45040444243073 is a deficient number, since it is larger than the sum of its proper divisors (1).

45040444243073 is an equidigital number, since it uses as much as digits as its factorization.

45040444243073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2580480, while the sum is 44.

The spelling of 45040444243073 in words is "forty-five trillion, forty billion, four hundred forty-four million, two hundred forty-three thousand, seventy-three".