45205904813 has 2 divisors, whose sum is σ = 45205904814. Its totient is φ = 45205904812.

The previous prime is 45205904801. The next prime is 45205904837. The reversal of 45205904813 is 31840950254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44269422409 + 936482404 = 210403^2 + 30602^2 .

It is a cyclic number.

It is not a de Polignac number, because 45205904813 - 2⁶ = 45205904749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45205904713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22602952406 + 22602952407.

It is an arithmetic number, because the mean of its divisors is an integer number (22602952407).

Almost surely, 2^45205904813 is an apocalyptic number.

It is an amenable number.

45205904813 is a deficient number, since it is larger than the sum of its proper divisors (1).

45205904813 is an equidigital number, since it uses as much as digits as its factorization.

45205904813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 45205904813 in words is "forty-five billion, two hundred five million, nine hundred four thousand, eight hundred thirteen".