489726411632640 has 3744 divisors, whose sum is σ = 2210424135454080. Its totient is φ = 97643598446592.

The previous prime is 489726411632621. The next prime is 489726411632693. The reversal of 489726411632640 is 46236114627984.

489726411632640 is a `hidden beast` number, since 4 + 8 + 9 + 7 + 264 + 1 + 1 + 6 + 326 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (3744).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 860679106276 + ... + 860679106844.

It is an arithmetic number, because the mean of its divisors is an integer number (590391061820).

Almost surely, 2^{489726411632640} is an apocalyptic number.

489726411632640 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 489726411632640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105212067727040).

489726411632640 is an abundant number, since it is smaller than the sum of its proper divisors (1720697723821440).

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

489726411632640 is a wasteful number, since it uses less digits than its factorization.

489726411632640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 719 counting only the distinct ones).

The product of its (nonzero) digits is 83607552, while the sum is 63.

The spelling of 489726411632640 in words is "four hundred eighty-nine trillion, seven hundred twenty-six billion, four hundred eleven million, six hundred thirty-two thousand, six hundred forty".