5045165681 has 2 divisors, whose sum is σ = 5045165682. Its totient is φ = 5045165680.

The previous prime is 5045165677. The next prime is 5045165683. The reversal of 5045165681 is 1865615405.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5041000000 + 4165681 = 71000^2 + 2041^2 .

It is a cyclic number.

It is not a de Polignac number, because 5045165681 - 2² = 5045165677 is a prime.

It is a super-2 number, since 2×5045165681² = 50907393497480387522, which contains 22 as substring.

Together with 5045165683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5045165683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2522582840 + 2522582841.

It is an arithmetic number, because the mean of its divisors is an integer number (2522582841).

Almost surely, 2^5045165681 is an apocalyptic number.

It is an amenable number.

5045165681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5045165681 is an equidigital number, since it uses as much as digits as its factorization.

5045165681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 5045165681 is about 71029.3297237134. The cubic root of 5045165681 is about 1715.1093359052.

The spelling of 5045165681 in words is "five billion, forty-five million, one hundred sixty-five thousand, six hundred eighty-one".