40674040391 has 2 divisors, whose sum is σ = 40674040392. Its totient is φ = 40674040390.

The previous prime is 40674040361. The next prime is 40674040423. The reversal of 40674040391 is 19304047604.

40674040391 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 not a de Polignac number, because 40674040391 - 2³⁰ = 39600298567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40674040301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20337020195 + 20337020196.

It is an arithmetic number, because the mean of its divisors is an integer number (20337020196).

Almost surely, 2^40674040391 is an apocalyptic number.

40674040391 is a deficient number, since it is larger than the sum of its proper divisors (1).

40674040391 is an equidigital number, since it uses as much as digits as its factorization.

40674040391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

Adding to 40674040391 its reverse (19304047604), we get a palindrome (59978087995).

The spelling of 40674040391 in words is "forty billion, six hundred seventy-four million, forty thousand, three hundred ninety-one".