491893352009448 has 32 divisors (see below), whose sum is σ = 1229734047225600. Its totient is φ = 163964361709568.

The previous prime is 491893352009399. The next prime is 491893352009453. The reversal of 491893352009448 is 844900253398194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51581065 + ... + 60368807.

It is an arithmetic number, because the mean of its divisors is an integer number (38429188975800).

Almost surely, 2^{491893352009448} is an apocalyptic number.

It is an amenable number.

491893352009448 is an abundant number, since it is smaller than the sum of its proper divisors (737840695216152).

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

491893352009448 is a wasteful number, since it uses less digits than its factorization.

491893352009448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11120041 (or 11120037 counting only the distinct ones).

The product of its (nonzero) digits is 268738560, while the sum is 69.

The spelling of 491893352009448 in words is "four hundred ninety-one trillion, eight hundred ninety-three billion, three hundred fifty-two million, nine thousand, four hundred forty-eight".