491182795650 has 24 divisors (see below), whose sum is σ = 1218133333584. Its totient is φ = 130982078800.

The previous prime is 491182795637. The next prime is 491182795651. The reversal of 491182795650 is 56597281194.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (491182795651) 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 11 ways as a sum of consecutive naturals, for example, 1637275836 + ... + 1637276135.

It is an arithmetic number, because the mean of its divisors is an integer number (50755555566).

Almost surely, 2^491182795650 is an apocalyptic number.

491182795650 is an abundant number, since it is smaller than the sum of its proper divisors (726950537934).

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

491182795650 is a wasteful number, since it uses less digits than its factorization.

491182795650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274551986 (or 3274551981 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 57.

The spelling of 491182795650 in words is "four hundred ninety-one billion, one hundred eighty-two million, seven hundred ninety-five thousand, six hundred fifty".