491458845696 has 704 divisors, whose sum is σ = 1663906406400. Its totient is φ = 125532831744.

The previous prime is 491458845679. The next prime is 491458845697. The reversal of 491458845696 is 696548854194.

It is a self number, because there is not a number n which added to its sum of digits gives 491458845696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491458845697) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1368965965 + ... + 1368966323.

Almost surely, 2^491458845696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491458845696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (831953203200).

491458845696 is an abundant number, since it is smaller than the sum of its proper divisors (1172447560704).

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

491458845696 is a wasteful number, since it uses less digits than its factorization.

491458845696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544 (or 526 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 69.

The spelling of 491458845696 in words is "four hundred ninety-one billion, four hundred fifty-eight million, eight hundred forty-five thousand, six hundred ninety-six".