491358064653 has 16 divisors (see below), whose sum is σ = 733669672960. Its totient is φ = 324992733408.

The previous prime is 491358064621. The next prime is 491358064657. The reversal of 491358064653 is 356460853194.

491358064653 is a `hidden beast` number, since 4 + 9 + 1 + 3 + 580 + 6 + 4 + 6 + 53 = 666.

It is not a de Polignac number, because 491358064653 - 2⁵ = 491358064621 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 491358064653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491358064657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71644000 + ... + 71650857.

It is an arithmetic number, because the mean of its divisors is an integer number (45854354560).

Almost surely, 2^491358064653 is an apocalyptic number.

It is an amenable number.

491358064653 is a deficient number, since it is larger than the sum of its proper divisors (242311608307).

491358064653 is a wasteful number, since it uses less digits than its factorization.

491358064653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143294993 (or 143294987 counting only the distinct ones).

The product of its (nonzero) digits is 9331200, while the sum is 54.

The spelling of 491358064653 in words is "four hundred ninety-one billion, three hundred fifty-eight million, sixty-four thousand, six hundred fifty-three".