491818566597119 has 8 divisors (see below), whose sum is σ = 492684781809840. Its totient is φ = 490952753254656.

The previous prime is 491818566597107. The next prime is 491818566597133. The reversal of 491818566597119 is 911795665818194.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 491818566597119 - 2¹⁶ = 491818566531583 is a prime.

It is a super-2 number, since 2×491818566597119² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491818566594119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98017709 + ... + 102913110.

It is an arithmetic number, because the mean of its divisors is an integer number (61585597726230).

Almost surely, 2^{491818566597119} is an apocalyptic number.

491818566597119 is a deficient number, since it is larger than the sum of its proper divisors (866215212721).

491818566597119 is a wasteful number, since it uses less digits than its factorization.

491818566597119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200935129.

The product of its digits is 1175731200, while the sum is 80.

The spelling of 491818566597119 in words is "four hundred ninety-one trillion, eight hundred eighteen billion, five hundred sixty-six million, five hundred ninety-seven thousand, one hundred nineteen".