491020548000 has 192 divisors, whose sum is σ = 1618458371712. Its totient is φ = 130134988800.

The previous prime is 491020547959. The next prime is 491020548023. The reversal of 491020548000 is 845020194.

491020548000 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×491020548000² (a number of 24 digits) contains 22 as substring.

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, 1830484 + ... + 2081516.

It is an arithmetic number, because the mean of its divisors is an integer number (8429470686).

Almost surely, 2^491020548000 is an apocalyptic number.

491020548000 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 491020548000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (809229185856).

491020548000 is an abundant number, since it is smaller than the sum of its proper divisors (1127437823712).

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

491020548000 is a wasteful number, since it uses less digits than its factorization.

491020548000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251224 (or 251206 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

Adding to 491020548000 its reverse (845020194), we get a palindrome (491865568194).

The spelling of 491020548000 in words is "four hundred ninety-one billion, twenty million, five hundred forty-eight thousand".