40045743943 has 2 divisors, whose sum is σ = 40045743944. Its totient is φ = 40045743942.

The previous prime is 40045743919. The next prime is 40045743961. The reversal of 40045743943 is 34934754004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40045743943 - 2²⁹ = 39508873031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40045743943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40045743443) 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, 20022871971 + 20022871972.

It is an arithmetic number, because the mean of its divisors is an integer number (20022871972).

Almost surely, 2^40045743943 is an apocalyptic number.

40045743943 is a deficient number, since it is larger than the sum of its proper divisors (1).

40045743943 is an equidigital number, since it uses as much as digits as its factorization.

40045743943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 43.

The spelling of 40045743943 in words is "forty billion, forty-five million, seven hundred forty-three thousand, nine hundred forty-three".