491508047368 has 16 divisors (see below), whose sum is σ = 992468172780. Its totient is φ = 226849867968.

The previous prime is 491508047351. The next prime is 491508047417. The reversal of 491508047368 is 863740805194.

It can be written as a sum of positive squares in 2 ways, for example, as 490675032324 + 833015044 = 700482^2 + 28862^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2363019355 + ... + 2363019562.

Almost surely, 2^491508047368 is an apocalyptic number.

It is an amenable number.

491508047368 is an abundant number, since it is smaller than the sum of its proper divisors (500960125412).

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

491508047368 is a wasteful number, since it uses less digits than its factorization.

491508047368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4726038936 (or 4726038932 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 491508047368 in words is "four hundred ninety-one billion, five hundred eight million, forty-seven thousand, three hundred sixty-eight".