41657881491 has 12 divisors (see below), whose sum is σ = 60724538160. Its totient is φ = 27517132080.

The previous prime is 41657881487. The next prime is 41657881511. The reversal of 41657881491 is 19418875614.

41657881491 is a `hidden beast` number, since 4 + 1 + 6 + 5 + 78 + 81 + 491 = 666.

It is not a de Polignac number, because 41657881491 - 2² = 41657881487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (41657881411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21231375 + ... + 21233336.

It is an arithmetic number, because the mean of its divisors is an integer number (5060378180).

Almost surely, 2^41657881491 is an apocalyptic number.

41657881491 is a deficient number, since it is larger than the sum of its proper divisors (19066656669).

41657881491 is a wasteful number, since it uses less digits than its factorization.

41657881491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42464826 (or 42464823 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 54.

The spelling of 41657881491 in words is "forty-one billion, six hundred fifty-seven million, eight hundred eighty-one thousand, four hundred ninety-one".