40518741929 has 2 divisors, whose sum is σ = 40518741930. Its totient is φ = 40518741928.

The previous prime is 40518741871. The next prime is 40518741941. The reversal of 40518741929 is 92914781504.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26841907225 + 13676834704 = 163835^2 + 116948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40518741929 is a prime.

It is not a weakly prime, because it can be changed into another prime (40518746929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20259370964 + 20259370965.

It is an arithmetic number, because the mean of its divisors is an integer number (20259370965).

Almost surely, 2^40518741929 is an apocalyptic number.

It is an amenable number.

40518741929 is a deficient number, since it is larger than the sum of its proper divisors (1).

40518741929 is an equidigital number, since it uses as much as digits as its factorization.

40518741929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 40518741929 in words is "forty billion, five hundred eighteen million, seven hundred forty-one thousand, nine hundred twenty-nine".