494663336687520 has 5760 divisors, whose sum is σ = 2562287534940672. Its totient is φ = 88022030745600.

The previous prime is 494663336687519. The next prime is 494663336687557. The reversal of 494663336687520 is 25786633366494.

494663336687520 is a `hidden beast` number, since 4 + 9 + 4 + 6 + 6 + 3 + 3 + 36 + 68 + 7 + 520 = 666.

It is a super-2 number, since 2×494663336687520² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 959 ways as a sum of consecutive naturals, for example, 109608536784 + ... + 109608541296.

Almost surely, 2^{494663336687520} is an apocalyptic number.

494663336687520 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 494663336687520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281143767470336).

494663336687520 is an abundant number, since it is smaller than the sum of its proper divisors (2067624198253152).

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

494663336687520 is a wasteful number, since it uses less digits than its factorization.

494663336687520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666 (or 4642 counting only the distinct ones).

The product of its (nonzero) digits is 2821754880, while the sum is 72.

The spelling of 494663336687520 in words is "four hundred ninety-four trillion, six hundred sixty-three billion, three hundred thirty-six million, six hundred eighty-seven thousand, five hundred twenty".