491152254720 has 288 divisors, whose sum is σ = 1621359667200. Its totient is φ = 126581391360.

The previous prime is 491152254713. The next prime is 491152254773. The reversal of 491152254720 is 27452251194.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107967006 + ... + 107971554.

Almost surely, 2^491152254720 is an apocalyptic number.

491152254720 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 491152254720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (810679833600).

491152254720 is an abundant number, since it is smaller than the sum of its proper divisors (1130207412480).

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

491152254720 is a wasteful number, since it uses less digits than its factorization.

491152254720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511 (or 5497 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 491152254720 in words is "four hundred ninety-one billion, one hundred fifty-two million, two hundred fifty-four thousand, seven hundred twenty".