494395991040 has 704 divisors, whose sum is σ = 1924613374464. Its totient is φ = 105740500992.

The previous prime is 494395991017. The next prime is 494395991051. The reversal of 494395991040 is 40199593494.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 360083794 + ... + 360085166.

It is an arithmetic number, because the mean of its divisors is an integer number (2733825816).

Almost surely, 2^494395991040 is an apocalyptic number.

494395991040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494395991040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (962306687232).

494395991040 is an abundant number, since it is smaller than the sum of its proper divisors (1430217383424).

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

494395991040 is a wasteful number, since it uses less digits than its factorization.

494395991040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 57.

The spelling of 494395991040 in words is "four hundred ninety-four billion, three hundred ninety-five million, nine hundred ninety-one thousand, forty".