40881257591 has 2 divisors, whose sum is σ = 40881257592. Its totient is φ = 40881257590.

The previous prime is 40881257513. The next prime is 40881257617. The reversal of 40881257591 is 19575218804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40881257591 - 2³⁰ = 39807515767 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 (40887257591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20440628795 + 20440628796.

It is an arithmetic number, because the mean of its divisors is an integer number (20440628796).

Almost surely, 2^40881257591 is an apocalyptic number.

40881257591 is a deficient number, since it is larger than the sum of its proper divisors (1).

40881257591 is an equidigital number, since it uses as much as digits as its factorization.

40881257591 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 806400, while the sum is 50.

The spelling of 40881257591 in words is "forty billion, eight hundred eighty-one million, two hundred fifty-seven thousand, five hundred ninety-one".