491346476658 has 64 divisors (see below), whose sum is σ = 1102712956800. Its totient is φ = 162165291840.

The previous prime is 491346476651. The next prime is 491346476723. The reversal of 491346476658 is 856674643194.

491346476658 is a `hidden beast` number, since 49 + 1 + 3 + 464 + 76 + 65 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 491346476595 and 491346476604.

It is not an unprimeable number, because it can be changed into a prime (491346476651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2128485 + ... + 2348007.

It is an arithmetic number, because the mean of its divisors is an integer number (17229889950).

Almost surely, 2^491346476658 is an apocalyptic number.

491346476658 is an abundant number, since it is smaller than the sum of its proper divisors (611366480142).

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

491346476658 is a wasteful number, since it uses less digits than its factorization.

491346476658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219944 (or 219938 counting only the distinct ones).

The product of its digits is 104509440, while the sum is 63.

The spelling of 491346476658 in words is "four hundred ninety-one billion, three hundred forty-six million, four hundred seventy-six thousand, six hundred fifty-eight".