40339036817 has 2 divisors, whose sum is σ = 40339036818. Its totient is φ = 40339036816.

The previous prime is 40339036763. The next prime is 40339036831. The reversal of 40339036817 is 71863093304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36742755856 + 3596280961 = 191684^2 + 59969^2 .

It is a cyclic number.

It is not a de Polignac number, because 40339036817 - 2²⁰ = 40337988241 is a prime.

It is not a weakly prime, because it can be changed into another prime (40339036877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20169518408 + 20169518409.

It is an arithmetic number, because the mean of its divisors is an integer number (20169518409).

Almost surely, 2^40339036817 is an apocalyptic number.

It is an amenable number.

40339036817 is a deficient number, since it is larger than the sum of its proper divisors (1).

40339036817 is an equidigital number, since it uses as much as digits as its factorization.

40339036817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 40339036817 in words is "forty billion, three hundred thirty-nine million, thirty-six thousand, eight hundred seventeen".