40404037213 has 2 divisors, whose sum is σ = 40404037214. Its totient is φ = 40404037212.

The previous prime is 40404037189. The next prime is 40404037217. The reversal of 40404037213 is 31273040404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40273666489 + 130370724 = 200683^2 + 11418^2 .

It is a cyclic number.

It is not a de Polignac number, because 40404037213 - 2¹³ = 40404029021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40404037217) 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, 20202018606 + 20202018607.

It is an arithmetic number, because the mean of its divisors is an integer number (20202018607).

Almost surely, 2^40404037213 is an apocalyptic number.

It is an amenable number.

40404037213 is a deficient number, since it is larger than the sum of its proper divisors (1).

40404037213 is an equidigital number, since it uses as much as digits as its factorization.

40404037213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 28.

Adding to 40404037213 its reverse (31273040404), we get a palindrome (71677077617).

The spelling of 40404037213 in words is "forty billion, four hundred four million, thirty-seven thousand, two hundred thirteen".