491690382215 has 8 divisors (see below), whose sum is σ = 615681870048. Its totient is φ = 376250031520.

The previous prime is 491690382191. The next prime is 491690382223. The reversal of 491690382215 is 512283096194.

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

It is not a de Polignac number, because 491690382215 - 2¹⁰ = 491690381191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2137784156 + ... + 2137784385.

It is an arithmetic number, because the mean of its divisors is an integer number (76960233756).

Almost surely, 2^491690382215 is an apocalyptic number.

491690382215 is a deficient number, since it is larger than the sum of its proper divisors (123991487833).

491690382215 is a wasteful number, since it uses less digits than its factorization.

491690382215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4275568569.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 491690382215 in words is "four hundred ninety-one billion, six hundred ninety million, three hundred eighty-two thousand, two hundred fifteen".