40178436343 has 2 divisors, whose sum is σ = 40178436344. Its totient is φ = 40178436342.

The previous prime is 40178436289. The next prime is 40178436371. The reversal of 40178436343 is 34363487104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40178436343 - 2⁹ = 40178435831 is a prime.

It is a super-2 number, since 2×40178436343² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40178436343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40178433343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20089218171 + 20089218172.

It is an arithmetic number, because the mean of its divisors is an integer number (20089218172).

Almost surely, 2^40178436343 is an apocalyptic number.

40178436343 is a deficient number, since it is larger than the sum of its proper divisors (1).

40178436343 is an equidigital number, since it uses as much as digits as its factorization.

40178436343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 40178436343 in words is "forty billion, one hundred seventy-eight million, four hundred thirty-six thousand, three hundred forty-three".