41991181808 has 10 divisors (see below), whose sum is σ = 81357914784. Its totient is φ = 20995590896.

The previous prime is 41991181783. The next prime is 41991181867. The reversal of 41991181808 is 80818119914.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1312224416 + ... + 1312224447.

Almost surely, 2^41991181808 is an apocalyptic number.

It is an amenable number.

41991181808 is a deficient number, since it is larger than the sum of its proper divisors (39366732976).

41991181808 is a wasteful number, since it uses less digits than its factorization.

41991181808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2624448871 (or 2624448865 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 50.

The spelling of 41991181808 in words is "forty-one billion, nine hundred ninety-one million, one hundred eighty-one thousand, eight hundred eight".