491322519360 has 336 divisors, whose sum is σ = 1751016655440. Its totient is φ = 126299013120.

The previous prime is 491322519353. The next prime is 491322519367. The reversal of 491322519360 is 63915223194.

491322519360 is a `hidden beast` number, since 4 + 9 + 1 + 32 + 251 + 9 + 360 = 666.

It is an interprime number because it is at equal distance from previous prime (491322519353) and next prime (491322519367).

It can be written as a sum of positive squares in 8 ways, for example, as 48182006016 + 443140513344 = 219504^2 + 665688^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491322519367) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56204590 + ... + 56213330.

Almost surely, 2^491322519360 is an apocalyptic number.

491322519360 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 491322519360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875508327720).

491322519360 is an abundant number, since it is smaller than the sum of its proper divisors (1259694136080).

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

491322519360 is a wasteful number, since it uses less digits than its factorization.

491322519360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9466 (or 9453 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The spelling of 491322519360 in words is "four hundred ninety-one billion, three hundred twenty-two million, five hundred nineteen thousand, three hundred sixty".