491402716395684 has 24 divisors (see below), whose sum is σ = 1146672171341088. Its totient is φ = 163791500738880.

The previous prime is 491402716395677. The next prime is 491402716395709. The reversal of 491402716395684 is 486593617204194.

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, 1175373082 + ... + 1175791089.

It is an arithmetic number, because the mean of its divisors is an integer number (47778007139212).

It is a 2-persistent number, because it is pandigital, and so is 2⋅491402716395684 = 982805432791368, but 3⋅491402716395684 = 1474208149187052 is not.

Almost surely, 2^{491402716395684} is an apocalyptic number.

It is an amenable number.

491402716395684 is an abundant number, since it is smaller than the sum of its proper divisors (655269454945404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491402716395684 is a wasteful number, since it uses less digits than its factorization.

491402716395684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351181595 (or 2351181593 counting only the distinct ones).

The product of its (nonzero) digits is 313528320, while the sum is 69.

The spelling of 491402716395684 in words is "four hundred ninety-one trillion, four hundred two billion, seven hundred sixteen million, three hundred ninety-five thousand, six hundred eighty-four".