491740048799 has 4 divisors (see below), whose sum is σ = 491752926600. Its totient is φ = 491727171000.

The previous prime is 491740048777. The next prime is 491740048817. The reversal of 491740048799 is 997840047194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491740048799 - 2⁸ = 491740048543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491740048729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6381452 + ... + 6458049.

It is an arithmetic number, because the mean of its divisors is an integer number (122938231650).

Almost surely, 2^491740048799 is an apocalyptic number.

491740048799 is a deficient number, since it is larger than the sum of its proper divisors (12877801).

491740048799 is a wasteful number, since it uses less digits than its factorization.

491740048799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12877800.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 491740048799 in words is "four hundred ninety-one billion, seven hundred forty million, forty-eight thousand, seven hundred ninety-nine".