489661649915 has 16 divisors (see below), whose sum is σ = 630190173600. Its totient is φ = 364109870592.

The previous prime is 489661649909. The next prime is 489661649929. The reversal of 489661649915 is 519946166984.

It is a cyclic number.

It is not a de Polignac number, because 489661649915 - 2²⁸ = 489393214459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48620750 + ... + 48630819.

It is an arithmetic number, because the mean of its divisors is an integer number (39386885850).

Almost surely, 2^489661649915 is an apocalyptic number.

489661649915 is a deficient number, since it is larger than the sum of its proper divisors (140528523685).

489661649915 is a wasteful number, since it uses less digits than its factorization.

489661649915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97251646.

The product of its digits is 100776960, while the sum is 68.

The spelling of 489661649915 in words is "four hundred eighty-nine billion, six hundred sixty-one million, six hundred forty-nine thousand, nine hundred fifteen".