40020705743 has 2 divisors, whose sum is σ = 40020705744. Its totient is φ = 40020705742.

The previous prime is 40020705733. The next prime is 40020705761. The reversal of 40020705743 is 34750702004.

40020705743 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40020705743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40020705713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20010352871 + 20010352872.

It is an arithmetic number, because the mean of its divisors is an integer number (20010352872).

Almost surely, 2^40020705743 is an apocalyptic number.

40020705743 is a deficient number, since it is larger than the sum of its proper divisors (1).

40020705743 is an equidigital number, since it uses as much as digits as its factorization.

40020705743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 32.

The spelling of 40020705743 in words is "forty billion, twenty million, seven hundred five thousand, seven hundred forty-three".