491827008697 has 8 divisors (see below), whose sum is σ = 493853705280. Its totient is φ = 489803166960.

The previous prime is 491827008679. The next prime is 491827008719. The reversal of 491827008697 is 796800728194.

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 491827008697 - 2²⁷ = 491692790969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (491827008637) 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, 368103 + ... + 1057900.

It is an arithmetic number, because the mean of its divisors is an integer number (61731713160).

Almost surely, 2^491827008697 is an apocalyptic number.

It is an amenable number.

491827008697 is a deficient number, since it is larger than the sum of its proper divisors (2026696583).

491827008697 is a wasteful number, since it uses less digits than its factorization.

491827008697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427423.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The spelling of 491827008697 in words is "four hundred ninety-one billion, eight hundred twenty-seven million, eight thousand, six hundred ninety-seven".