494375091840 has 384 divisors, whose sum is σ = 2018297174400. Its totient is φ = 109103210496.

The previous prime is 494375091803. The next prime is 494375091851. The reversal of 494375091840 is 48190573494.

494375091840 is a `hidden beast` number, since 4 + 94 + 3 + 7 + 509 + 1 + 8 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 957879 + ... + 1380681.

It is an arithmetic number, because the mean of its divisors is an integer number (5255982225).

Almost surely, 2^494375091840 is an apocalyptic number.

494375091840 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 494375091840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1009148587200).

494375091840 is an abundant number, since it is smaller than the sum of its proper divisors (1523922082560).

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

494375091840 is a wasteful number, since it uses less digits than its factorization.

494375091840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422864 (or 422849 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 494375091840 in words is "four hundred ninety-four billion, three hundred seventy-five million, ninety-one thousand, eight hundred forty".