494178459840 has 560 divisors, whose sum is σ = 1954210325760. Its totient is φ = 117717442560.

The previous prime is 494178459829. The next prime is 494178459851. The reversal of 494178459840 is 48954871494.

494178459840 is a `hidden beast` number, since 4 + 9 + 4 + 178 + 459 + 8 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (494178459829) and next prime (494178459851).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 10422106 + ... + 10469414.

It is an arithmetic number, because the mean of its divisors is an integer number (3489661296).

Almost surely, 2^494178459840 is an apocalyptic number.

494178459840 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 494178459840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977105162880).

494178459840 is an abundant number, since it is smaller than the sum of its proper divisors (1460031865920).

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

494178459840 is a wasteful number, since it uses less digits than its factorization.

494178459840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47382 (or 47363 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 494178459840 in words is "four hundred ninety-four billion, one hundred seventy-eight million, four hundred fifty-nine thousand, eight hundred forty".