491753581119 has 16 divisors (see below), whose sum is σ = 729922163040. Its totient is φ = 327206468160.

The previous prime is 491753581091. The next prime is 491753581153. The reversal of 491753581119 is 911185357194.

491753581119 is a `hidden beast` number, since 4 + 9 + 1 + 7 + 53 + 581 + 1 + 1 + 9 = 666.

It is not a de Polignac number, because 491753581119 - 2⁷ = 491753580991 is a prime.

It is a super-2 number, since 2×491753581119² (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 (491753581169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17464912 + ... + 17493045.

It is an arithmetic number, because the mean of its divisors is an integer number (45620135190).

Almost surely, 2^491753581119 is an apocalyptic number.

491753581119 is a deficient number, since it is larger than the sum of its proper divisors (238168581921).

491753581119 is a wasteful number, since it uses less digits than its factorization.

491753581119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34958487 (or 34958481 counting only the distinct ones).

The product of its digits is 1360800, while the sum is 54.

The spelling of 491753581119 in words is "four hundred ninety-one billion, seven hundred fifty-three million, five hundred eighty-one thousand, one hundred nineteen".