41987911663 has 2 divisors, whose sum is σ = 41987911664. Its totient is φ = 41987911662.

The previous prime is 41987911649. The next prime is 41987911699. The reversal of 41987911663 is 36611978914.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41987911663 - 2⁵ = 41987911631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41987911633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20993955831 + 20993955832.

It is an arithmetic number, because the mean of its divisors is an integer number (20993955832).

Almost surely, 2^41987911663 is an apocalyptic number.

41987911663 is a deficient number, since it is larger than the sum of its proper divisors (1).

41987911663 is an equidigital number, since it uses as much as digits as its factorization.

41987911663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The spelling of 41987911663 in words is "forty-one billion, nine hundred eighty-seven million, nine hundred eleven thousand, six hundred sixty-three".