489259864845 has 30 divisors (see below), whose sum is σ = 877068843882. Its totient is φ = 260931087072.

The previous prime is 489259864837. The next prime is 489259864871. The reversal of 489259864845 is 548468952984.

489259864845 is a `hidden beast` number, since 4 + 8 + 92 + 59 + 8 + 6 + 484 + 5 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1233273924 + 488026590921 = 35118^2 + 698589^2 .

It is not a de Polignac number, because 489259864845 - 2³ = 489259864837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 14059207 + ... + 14093963.

Almost surely, 2^489259864845 is an apocalyptic number.

489259864845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

489259864845 is a deficient number, since it is larger than the sum of its proper divisors (387808979037).

489259864845 is an frugal number, since it uses more digits than its factorization.

489259864845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69531 (or 34765 counting only the distinct ones).

The product of its digits is 796262400, while the sum is 72.

The spelling of 489259864845 in words is "four hundred eighty-nine billion, two hundred fifty-nine million, eight hundred sixty-four thousand, eight hundred forty-five".