5173736681 has 2 divisors, whose sum is σ = 5173736682. Its totient is φ = 5173736680.

The previous prime is 5173736639. The next prime is 5173736719. The reversal of 5173736681 is 1866373715.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3364000000 + 1809736681 = 58000^2 + 42541^2 .

It is a cyclic number.

It is not a de Polignac number, because 5173736681 - 2²⁶ = 5106627817 is a prime.

It is a super-2 number, since 2×5173736681² = 53535102488649791522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5173738681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2586868340 + 2586868341.

It is an arithmetic number, because the mean of its divisors is an integer number (2586868341).

Almost surely, 2^5173736681 is an apocalyptic number.

It is an amenable number.

5173736681 is a deficient number, since it is larger than the sum of its proper divisors (1).

5173736681 is an equidigital number, since it uses as much as digits as its factorization.

5173736681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 47.

The square root of 5173736681 is about 71928.6916397066. The cubic root of 5173736681 is about 1729.5565795294.

The spelling of 5173736681 in words is "five billion, one hundred seventy-three million, seven hundred thirty-six thousand, six hundred eighty-one".