491201850444 has 24 divisors (see below), whose sum is σ = 1152076193520. Its totient is φ = 162885586944.

The previous prime is 491201850443. The next prime is 491201850457. The reversal of 491201850444 is 444058102194.

It is a junction number, because it is equal to n+sod(n) for n = 491201850396 and 491201850405.

It is not an unprimeable number, because it can be changed into a prime (491201850443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106042989 + ... + 106047620.

It is an arithmetic number, because the mean of its divisors is an integer number (48003174730).

Almost surely, 2^491201850444 is an apocalyptic number.

It is an amenable number.

491201850444 is an abundant number, since it is smaller than the sum of its proper divisors (660874343076).

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

491201850444 is a wasteful number, since it uses less digits than its factorization.

491201850444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212090809 (or 212090807 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 491201850444 in words is "four hundred ninety-one billion, two hundred one million, eight hundred fifty thousand, four hundred forty-four".