40042624591 has 2 divisors, whose sum is σ = 40042624592. Its totient is φ = 40042624590.

The previous prime is 40042624579. The next prime is 40042624673. The reversal of 40042624591 is 19542624004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40042624591 - 2³³ = 31452689999 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40042624591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40042624691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021312295 + 20021312296.

It is an arithmetic number, because the mean of its divisors is an integer number (20021312296).

Almost surely, 2^40042624591 is an apocalyptic number.

40042624591 is a deficient number, since it is larger than the sum of its proper divisors (1).

40042624591 is an equidigital number, since it uses as much as digits as its factorization.

40042624591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 40042624591 in words is "forty billion, forty-two million, six hundred twenty-four thousand, five hundred ninety-one".