4047244681 has 2 divisors, whose sum is σ = 4047244682. Its totient is φ = 4047244680.

The previous prime is 4047244631. The next prime is 4047244699. The reversal of 4047244681 is 1864427404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4045596025 + 1648656 = 63605^2 + 1284^2 .

It is a cyclic number.

It is not a de Polignac number, because 4047244681 - 2²¹ = 4045147529 is a prime.

It is a super-2 number, since 2×4047244681² = 32760379015765583522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4047244631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2023622340 + 2023622341.

It is an arithmetic number, because the mean of its divisors is an integer number (2023622341).

Almost surely, 2^4047244681 is an apocalyptic number.

It is an amenable number.

4047244681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4047244681 is an equidigital number, since it uses as much as digits as its factorization.

4047244681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172032, while the sum is 40.

The square root of 4047244681 is about 63617.9587930955. The cubic root of 4047244681 is about 1593.6262948126.

The spelling of 4047244681 in words is "four billion, forty-seven million, two hundred forty-four thousand, six hundred eighty-one".