491391327350 has 288 divisors, whose sum is σ = 1165360078848. Its totient is φ = 150885504000.

The previous prime is 491391327313. The next prime is 491391327353. The reversal of 491391327350 is 53723193194.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 491391327295 and 491391327304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491391327353) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1134852734 + ... + 1134853166.

Almost surely, 2^491391327350 is an apocalyptic number.

491391327350 is an abundant number, since it is smaller than the sum of its proper divisors (673968751498).

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

491391327350 is a wasteful number, since it uses less digits than its factorization.

491391327350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 47.

The spelling of 491391327350 in words is "four hundred ninety-one billion, three hundred ninety-one million, three hundred twenty-seven thousand, three hundred fifty".