491559498835 has 8 divisors (see below), whose sum is σ = 589999076496. Its totient is φ = 393162480480.

The previous prime is 491559498821. The next prime is 491559498839. The reversal of 491559498835 is 538894955194.

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

It is not a de Polignac number, because 491559498835 - 2¹⁷ = 491559367763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491559498839) 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, 10614409 + ... + 10660618.

It is an arithmetic number, because the mean of its divisors is an integer number (73749884562).

Almost surely, 2^491559498835 is an apocalyptic number.

491559498835 is a deficient number, since it is larger than the sum of its proper divisors (98439577661).

491559498835 is a wasteful number, since it uses less digits than its factorization.

491559498835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21279653.

The product of its digits is 279936000, while the sum is 70.

The spelling of 491559498835 in words is "four hundred ninety-one billion, five hundred fifty-nine million, four hundred ninety-eight thousand, eight hundred thirty-five".