491134243573 has 16 divisors (see below), whose sum is σ = 504149702400. Its totient is φ = 478262655936.

The previous prime is 491134243529. The next prime is 491134243577. The reversal of 491134243573 is 375342431194.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 491134243573 - 2¹⁷ = 491134112501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491134243577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10455886 + ... + 10502752.

It is an arithmetic number, because the mean of its divisors is an integer number (31509356400).

Almost surely, 2^491134243573 is an apocalyptic number.

It is an amenable number.

491134243573 is a deficient number, since it is larger than the sum of its proper divisors (13015458827).

491134243573 is a wasteful number, since it uses less digits than its factorization.

491134243573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48396.

The product of its digits is 1088640, while the sum is 46.

The spelling of 491134243573 in words is "four hundred ninety-one billion, one hundred thirty-four million, two hundred forty-three thousand, five hundred seventy-three".