40518741871 has 2 divisors, whose sum is σ = 40518741872. Its totient is φ = 40518741870.

The previous prime is 40518741869. The next prime is 40518741929. The reversal of 40518741871 is 17814781504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40518741871 - 2¹ = 40518741869 is a prime.

Together with 40518741869, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40518741371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20259370935 + 20259370936.

It is an arithmetic number, because the mean of its divisors is an integer number (20259370936).

Almost surely, 2^40518741871 is an apocalyptic number.

40518741871 is a deficient number, since it is larger than the sum of its proper divisors (1).

40518741871 is an equidigital number, since it uses as much as digits as its factorization.

40518741871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250880, while the sum is 46.

The spelling of 40518741871 in words is "forty billion, five hundred eighteen million, seven hundred forty-one thousand, eight hundred seventy-one".