40804368313 has 2 divisors, whose sum is σ = 40804368314. Its totient is φ = 40804368312.

The previous prime is 40804368299. The next prime is 40804368349. The reversal of 40804368313 is 31386340804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35059941049 + 5744427264 = 187243^2 + 75792^2 .

It is a cyclic number.

It is not a de Polignac number, because 40804368313 - 2⁹ = 40804367801 is a prime.

It is not a weakly prime, because it can be changed into another prime (40804368383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20402184156 + 20402184157.

It is an arithmetic number, because the mean of its divisors is an integer number (20402184157).

Almost surely, 2^40804368313 is an apocalyptic number.

It is an amenable number.

40804368313 is a deficient number, since it is larger than the sum of its proper divisors (1).

40804368313 is an equidigital number, since it uses as much as digits as its factorization.

40804368313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 40804368313 in words is "forty billion, eight hundred four million, three hundred sixty-eight thousand, three hundred thirteen".