491668164950 has 24 divisors (see below), whose sum is σ = 915080636448. Its totient is φ = 196542997280.

The previous prime is 491668164931. The next prime is 491668164961. The reversal of 491668164950 is 59461866194.

It is a self number, because there is not a number n which added to its sum of digits gives 491668164950.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3026777 + ... + 3185076.

It is an arithmetic number, because the mean of its divisors is an integer number (38128359852).

Almost surely, 2^491668164950 is an apocalyptic number.

491668164950 is a deficient number, since it is larger than the sum of its proper divisors (423412471498).

491668164950 is a wasteful number, since it uses less digits than its factorization.

491668164950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213448 (or 6213443 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 59.

The spelling of 491668164950 in words is "four hundred ninety-one billion, six hundred sixty-eight million, one hundred sixty-four thousand, nine hundred fifty".