45144232681 has 2 divisors, whose sum is σ = 45144232682. Its totient is φ = 45144232680.

The previous prime is 45144232669. The next prime is 45144232687. The reversal of 45144232681 is 18623244154.

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., 42780717225 + 2363515456 = 206835^2 + 48616^2 .

It is a cyclic number.

It is not a de Polignac number, because 45144232681 - 2¹¹ = 45144230633 is a prime.

It is a super-2 number, since 2×45144232681² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (45144232687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22572116340 + 22572116341.

It is an arithmetic number, because the mean of its divisors is an integer number (22572116341).

Almost surely, 2^45144232681 is an apocalyptic number.

It is an amenable number.

45144232681 is a deficient number, since it is larger than the sum of its proper divisors (1).

45144232681 is an equidigital number, since it uses as much as digits as its factorization.

45144232681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 40.

The spelling of 45144232681 in words is "forty-five billion, one hundred forty-four million, two hundred thirty-two thousand, six hundred eighty-one".