491587605695 has 8 divisors (see below), whose sum is σ = 589912907136. Its totient is φ = 393264897696.

The previous prime is 491587605689. The next prime is 491587605737. The reversal of 491587605695 is 596506785194.

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 491587605695 - 2³⁴ = 474407736511 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, 203612 + ... + 1012241.

It is an arithmetic number, because the mean of its divisors is an integer number (73739113392).

Almost surely, 2^491587605695 is an apocalyptic number.

491587605695 is a deficient number, since it is larger than the sum of its proper divisors (98325301441).

491587605695 is a wasteful number, since it uses less digits than its factorization.

491587605695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296721.

The product of its (nonzero) digits is 81648000, while the sum is 65.

The spelling of 491587605695 in words is "four hundred ninety-one billion, five hundred eighty-seven million, six hundred five thousand, six hundred ninety-five".