491927079695 has 16 divisors (see below), whose sum is σ = 598195640640. Its totient is φ = 388313823744.

The previous prime is 491927079691. The next prime is 491927079713. The reversal of 491927079695 is 596970729194.

It is a cyclic number.

It is not a de Polignac number, because 491927079695 - 2² = 491927079691 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491927079691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1581530 + ... + 1866839.

It is an arithmetic number, because the mean of its divisors is an integer number (37387227540).

Almost surely, 2^491927079695 is an apocalyptic number.

491927079695 is a deficient number, since it is larger than the sum of its proper divisors (106268560945).

491927079695 is a wasteful number, since it uses less digits than its factorization.

491927079695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448754.

The product of its (nonzero) digits is 77157360, while the sum is 68.

The spelling of 491927079695 in words is "four hundred ninety-one billion, nine hundred twenty-seven million, seventy-nine thousand, six hundred ninety-five".