494181737280 has 1008 divisors, whose sum is σ = 2236975138944. Its totient is φ = 97266769920.

The previous prime is 494181737279. The next prime is 494181737297. The reversal of 494181737280 is 82737181494.

494181737280 is a `hidden beast` number, since 4 + 94 + 181 + 7 + 372 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a super-2 number, since 2×494181737280² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 80052274 + ... + 80058446.

It is an arithmetic number, because the mean of its divisors is an integer number (2219221368).

Almost surely, 2^494181737280 is an apocalyptic number.

494181737280 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 494181737280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118487569472).

494181737280 is an abundant number, since it is smaller than the sum of its proper divisors (1742793401664).

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

494181737280 is a wasteful number, since it uses less digits than its factorization.

494181737280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252 (or 6220 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 494181737280 in words is "four hundred ninety-four billion, one hundred eighty-one million, seven hundred thirty-seven thousand, two hundred eighty".