40402340413 has 2 divisors, whose sum is σ = 40402340414. Its totient is φ = 40402340412.

The previous prime is 40402340401. The next prime is 40402340443. The reversal of 40402340413 is 31404320404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32537665924 + 7864674489 = 180382^2 + 88683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40402340413 is a prime.

It is a super-2 number, since 2×40402340413² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40402340443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20201170206 + 20201170207.

It is an arithmetic number, because the mean of its divisors is an integer number (20201170207).

Almost surely, 2^40402340413 is an apocalyptic number.

It is an amenable number.

40402340413 is a deficient number, since it is larger than the sum of its proper divisors (1).

40402340413 is an equidigital number, since it uses as much as digits as its factorization.

40402340413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 40402340413 its reverse (31404320404), we get a palindrome (71806660817).

The spelling of 40402340413 in words is "forty billion, four hundred two million, three hundred forty thousand, four hundred thirteen".