40490006663 has 2 divisors, whose sum is σ = 40490006664. Its totient is φ = 40490006662.

The previous prime is 40490006651. The next prime is 40490006681. The reversal of 40490006663 is 36660009404.

It is a happy number.

40490006663 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-40490006663 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40490006693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20245003331 + 20245003332.

It is an arithmetic number, because the mean of its divisors is an integer number (20245003332).

Almost surely, 2^40490006663 is an apocalyptic number.

40490006663 is a deficient number, since it is larger than the sum of its proper divisors (1).

40490006663 is an equidigital number, since it uses as much as digits as its factorization.

40490006663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 40490006663 in words is "forty billion, four hundred ninety million, six thousand, six hundred sixty-three".