40242935591 has 2 divisors, whose sum is σ = 40242935592. Its totient is φ = 40242935590.

The previous prime is 40242935587. The next prime is 40242935609. The reversal of 40242935591 is 19553924204.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40242935591 - 2² = 40242935587 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 (40242935501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20121467795 + 20121467796.

It is an arithmetic number, because the mean of its divisors is an integer number (20121467796).

Almost surely, 2^40242935591 is an apocalyptic number.

40242935591 is a deficient number, since it is larger than the sum of its proper divisors (1).

40242935591 is an equidigital number, since it uses as much as digits as its factorization.

40242935591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388800, while the sum is 44.

The spelling of 40242935591 in words is "forty billion, two hundred forty-two million, nine hundred thirty-five thousand, five hundred ninety-one".