491020284150 has 768 divisors, whose sum is σ = 1596240691200. Its totient is φ = 109734912000.

The previous prime is 491020284127. The next prime is 491020284151. The reversal of 491020284150 is 51482020194.

It is a super-2 number, since 2×491020284150² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491020284151) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 2544146454 + ... + 2544146646.

It is an arithmetic number, because the mean of its divisors is an integer number (2078438400).

Almost surely, 2^491020284150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491020284150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798120345600).

491020284150 is an abundant number, since it is smaller than the sum of its proper divisors (1105220407050).

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

491020284150 is a wasteful number, since it uses less digits than its factorization.

491020284150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The spelling of 491020284150 in words is "four hundred ninety-one billion, twenty million, two hundred eighty-four thousand, one hundred fifty".