40589897591 has 2 divisors, whose sum is σ = 40589897592. Its totient is φ = 40589897590.

The previous prime is 40589897521. The next prime is 40589897669. The reversal of 40589897591 is 19579898504.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40589897591 - 2²⁶ = 40522788727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40589897501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20294948795 + 20294948796.

It is an arithmetic number, because the mean of its divisors is an integer number (20294948796).

Almost surely, 2^40589897591 is an apocalyptic number.

40589897591 is a deficient number, since it is larger than the sum of its proper divisors (1).

40589897591 is an equidigital number, since it uses as much as digits as its factorization.

40589897591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32659200, while the sum is 65.

The spelling of 40589897591 in words is "forty billion, five hundred eighty-nine million, eight hundred ninety-seven thousand, five hundred ninety-one".