41878619491 has 2 divisors, whose sum is σ = 41878619492. Its totient is φ = 41878619490.

The previous prime is 41878619477. The next prime is 41878619509. The reversal of 41878619491 is 19491687814.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41878619491 - 2¹⁵ = 41878586723 is a prime.

It is not a weakly prime, because it can be changed into another prime (41878619441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20939309745 + 20939309746.

It is an arithmetic number, because the mean of its divisors is an integer number (20939309746).

Almost surely, 2^41878619491 is an apocalyptic number.

41878619491 is a deficient number, since it is larger than the sum of its proper divisors (1).

41878619491 is an equidigital number, since it uses as much as digits as its factorization.

41878619491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3483648, while the sum is 58.

The spelling of 41878619491 in words is "forty-one billion, eight hundred seventy-eight million, six hundred nineteen thousand, four hundred ninety-one".