45104072081 has 2 divisors, whose sum is σ = 45104072082. Its totient is φ = 45104072080.

The previous prime is 45104072009. The next prime is 45104072119. The reversal of 45104072081 is 18027040154.

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., 43976187025 + 1127885056 = 209705^2 + 33584^2 .

It is a cyclic number.

It is not a de Polignac number, because 45104072081 - 2¹⁴ = 45104055697 is a prime.

It is a super-2 number, since 2×45104072081² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45104078081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22552036040 + 22552036041.

It is an arithmetic number, because the mean of its divisors is an integer number (22552036041).

Almost surely, 2^45104072081 is an apocalyptic number.

It is an amenable number.

45104072081 is a deficient number, since it is larger than the sum of its proper divisors (1).

45104072081 is an equidigital number, since it uses as much as digits as its factorization.

45104072081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8960, while the sum is 32.

The spelling of 45104072081 in words is "forty-five billion, one hundred four million, seventy-two thousand, eighty-one".