491895113522 has 6 divisors (see below), whose sum is σ = 737844158079. Its totient is φ = 245947060830.

The previous prime is 491895113461. The next prime is 491895113527. The reversal of 491895113522 is 225311598194.

It can be written as a sum of positive squares in only one way, i.e., 245947556761 + 245947556761 = 495931^2 + 495931^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=495931.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491895113527) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 743897 + ... + 1239827.

Almost surely, 2^491895113522 is an apocalyptic number.

491895113522 is a deficient number, since it is larger than the sum of its proper divisors (245949044557).

491895113522 is an frugal number, since it uses more digits than its factorization.

491895113522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991864 (or 495933 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

Multiplying 491895113522 by its sum of digits (50), we get a square (24594755676100 = 4959310²).

The spelling of 491895113522 in words is "four hundred ninety-one billion, eight hundred ninety-five million, one hundred thirteen thousand, five hundred twenty-two".