39810438713 has 2 divisors, whose sum is σ = 39810438714. Its totient is φ = 39810438712.

The previous prime is 39810438649. The next prime is 39810438727. The reversal of 39810438713 is 31783401893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28396294144 + 11414144569 = 168512^2 + 106837^2 .

It is a cyclic number.

It is not a de Polignac number, because 39810438713 - 2⁶ = 39810438649 is a prime.

It is not a weakly prime, because it can be changed into another prime (39810438763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19905219356 + 19905219357.

It is an arithmetic number, because the mean of its divisors is an integer number (19905219357).

Almost surely, 2^39810438713 is an apocalyptic number.

It is an amenable number.

39810438713 is a deficient number, since it is larger than the sum of its proper divisors (1).

39810438713 is an equidigital number, since it uses as much as digits as its factorization.

39810438713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 39810438713 in words is "thirty-nine billion, eight hundred ten million, four hundred thirty-eight thousand, seven hundred thirteen".