40427306317 has 2 divisors, whose sum is σ = 40427306318. Its totient is φ = 40427306316.

The previous prime is 40427306303. The next prime is 40427306357. The reversal of 40427306317 is 71360372404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39722881636 + 704424681 = 199306^2 + 26541^2 .

It is a cyclic number.

It is not a de Polignac number, because 40427306317 - 2²³ = 40418917709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40427306357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20213653158 + 20213653159.

It is an arithmetic number, because the mean of its divisors is an integer number (20213653159).

Almost surely, 2^40427306317 is an apocalyptic number.

It is an amenable number.

40427306317 is a deficient number, since it is larger than the sum of its proper divisors (1).

40427306317 is an equidigital number, since it uses as much as digits as its factorization.

40427306317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 40427306317 in words is "forty billion, four hundred twenty-seven million, three hundred six thousand, three hundred seventeen".