491960573267 has 4 divisors (see below), whose sum is σ = 520899430536. Its totient is φ = 463021716000.

The previous prime is 491960573263. The next prime is 491960573287. The reversal of 491960573267 is 762375069194.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 491960573267 - 2² = 491960573263 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491960573263) 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 3 ways as a sum of consecutive naturals, for example, 14469428609 + ... + 14469428642.

It is an arithmetic number, because the mean of its divisors is an integer number (130224857634).

Almost surely, 2^491960573267 is an apocalyptic number.

491960573267 is a deficient number, since it is larger than the sum of its proper divisors (28938857269).

491960573267 is a wasteful number, since it uses less digits than its factorization.

491960573267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28938857268.

The product of its (nonzero) digits is 17146080, while the sum is 59.

The spelling of 491960573267 in words is "four hundred ninety-one billion, nine hundred sixty million, five hundred seventy-three thousand, two hundred sixty-seven".