40881257887 has 2 divisors, whose sum is σ = 40881257888. Its totient is φ = 40881257886.

The previous prime is 40881257881. The next prime is 40881258001. The reversal of 40881257887 is 78875218804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40881257887 - 2¹¹ = 40881255839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40881257881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20440628943 + 20440628944.

It is an arithmetic number, because the mean of its divisors is an integer number (20440628944).

Almost surely, 2^40881257887 is an apocalyptic number.

40881257887 is a deficient number, since it is larger than the sum of its proper divisors (1).

40881257887 is an equidigital number, since it uses as much as digits as its factorization.

40881257887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8028160, while the sum is 58.

The spelling of 40881257887 in words is "forty billion, eight hundred eighty-one million, two hundred fifty-seven thousand, eight hundred eighty-seven".