40718434049 has 2 divisors, whose sum is σ = 40718434050. Its totient is φ = 40718434048.

The previous prime is 40718434037. The next prime is 40718434111. The reversal of 40718434049 is 94043481704.

40718434049 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 can be written as a sum of positive squares in only one way, i.e., 26523379600 + 14195054449 = 162860^2 + 119143^2 .

It is a cyclic number.

It is not a de Polignac number, because 40718434049 - 2⁴ = 40718434033 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40718434849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20359217024 + 20359217025.

It is an arithmetic number, because the mean of its divisors is an integer number (20359217025).

Almost surely, 2^40718434049 is an apocalyptic number.

It is an amenable number.

40718434049 is a deficient number, since it is larger than the sum of its proper divisors (1).

40718434049 is an equidigital number, since it uses as much as digits as its factorization.

40718434049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 44.

The spelling of 40718434049 in words is "forty billion, seven hundred eighteen million, four hundred thirty-four thousand, forty-nine".