491183222745 has 16 divisors (see below), whose sum is σ = 785906618112. Its totient is φ = 261959898240.

The previous prime is 491183222743. The next prime is 491183222851. The reversal of 491183222745 is 547222381194.

It is not a de Polignac number, because 491183222745 - 2¹ = 491183222743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 491183222694 and 491183222703.

It is not an unprimeable number, because it can be changed into a prime (491183222741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 745509 + ... + 1240221.

It is an arithmetic number, because the mean of its divisors is an integer number (49119163632).

Almost surely, 2^491183222745 is an apocalyptic number.

It is an amenable number.

491183222745 is a deficient number, since it is larger than the sum of its proper divisors (294723395367).

491183222745 is a wasteful number, since it uses less digits than its factorization.

491183222745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560912.

The product of its digits is 967680, while the sum is 48.

The spelling of 491183222745 in words is "four hundred ninety-one billion, one hundred eighty-three million, two hundred twenty-two thousand, seven hundred forty-five".