491633448586 has 8 divisors (see below), whose sum is σ = 842800197600. Its totient is φ = 210700049388.

The previous prime is 491633448571. The next prime is 491633448587. The reversal of 491633448586 is 685844336194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (491633448587) 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, 17558337436 + ... + 17558337463.

It is an arithmetic number, because the mean of its divisors is an integer number (105350024700).

Almost surely, 2^491633448586 is an apocalyptic number.

491633448586 is a deficient number, since it is larger than the sum of its proper divisors (351166749014).

491633448586 is a wasteful number, since it uses less digits than its factorization.

491633448586 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35116674908.

The product of its digits is 59719680, while the sum is 61.

The spelling of 491633448586 in words is "four hundred ninety-one billion, six hundred thirty-three million, four hundred forty-eight thousand, five hundred eighty-six".