491316077615 has 16 divisors (see below), whose sum is σ = 643289934240. Its totient is φ = 357258270720.

The previous prime is 491316077591. The next prime is 491316077627. The reversal of 491316077615 is 516770613194.

It is not a de Polignac number, because 491316077615 - 2²² = 491311883311 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 463010 + ... + 1094079.

It is an arithmetic number, because the mean of its divisors is an integer number (40205620890).

Almost surely, 2^491316077615 is an apocalyptic number.

491316077615 is a deficient number, since it is larger than the sum of its proper divisors (151973856625).

491316077615 is a wasteful number, since it uses less digits than its factorization.

491316077615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1562842.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 491316077615 in words is "four hundred ninety-one billion, three hundred sixteen million, seventy-seven thousand, six hundred fifteen".