40943328913 has 2 divisors, whose sum is σ = 40943328914. Its totient is φ = 40943328912.

The previous prime is 40943328889. The next prime is 40943328917. The reversal of 40943328913 is 31982334904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24444697104 + 16498631809 = 156348^2 + 128447^2 .

It is a cyclic number.

It is not a de Polignac number, because 40943328913 - 2⁹ = 40943328401 is a prime.

It is not a weakly prime, because it can be changed into another prime (40943328917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20471664456 + 20471664457.

It is an arithmetic number, because the mean of its divisors is an integer number (20471664457).

Almost surely, 2^40943328913 is an apocalyptic number.

It is an amenable number.

40943328913 is a deficient number, since it is larger than the sum of its proper divisors (1).

40943328913 is an equidigital number, since it uses as much as digits as its factorization.

40943328913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 40943328913 in words is "forty billion, nine hundred forty-three million, three hundred twenty-eight thousand, nine hundred thirteen".