491632429808 has 60 divisors (see below), whose sum is σ = 1053392230368. Its totient is φ = 222079403520.

The previous prime is 491632429751. The next prime is 491632429819. The reversal of 491632429808 is 808924236194.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1807133 + ... + 2061308.

Almost surely, 2^491632429808 is an apocalyptic number.

It is an amenable number.

491632429808 is an abundant number, since it is smaller than the sum of its proper divisors (561759800560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491632429808 is a wasteful number, since it uses less digits than its factorization.

491632429808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868522 (or 3868503 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 56.

The spelling of 491632429808 in words is "four hundred ninety-one billion, six hundred thirty-two million, four hundred twenty-nine thousand, eight hundred eight".