494498501688 has 128 divisors (see below), whose sum is σ = 1335064550400. Its totient is φ = 152162605056.

The previous prime is 494498501687. The next prime is 494498501741. The reversal of 494498501688 is 886105894494.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494498501687) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46369845 + ... + 46380507.

It is an arithmetic number, because the mean of its divisors is an integer number (10430191800).

Almost surely, 2^494498501688 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 494498501688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (667532275200).

494498501688 is an abundant number, since it is smaller than the sum of its proper divisors (840566048712).

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

494498501688 is a wasteful number, since it uses less digits than its factorization.

494498501688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13621 (or 13617 counting only the distinct ones).

The product of its (nonzero) digits is 79626240, while the sum is 66.

The spelling of 494498501688 in words is "four hundred ninety-four billion, four hundred ninety-eight million, five hundred one thousand, six hundred eighty-eight".