489488023521 has 48 divisors (see below), whose sum is σ = 827879165568. Its totient is φ = 272843424000.

The previous prime is 489488023489. The next prime is 489488023547. The reversal of 489488023521 is 125320884984.

489488023521 is a `hidden beast` number, since 4 + 8 + 94 + 8 + 8 + 0 + 23 + 521 = 666.

It is not a de Polignac number, because 489488023521 - 2⁵ = 489488023489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489488021521) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25435515 + ... + 25454751.

It is an arithmetic number, because the mean of its divisors is an integer number (17247482616).

Almost surely, 2^489488023521 is an apocalyptic number.

489488023521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

489488023521 is a deficient number, since it is larger than the sum of its proper divisors (338391142047).

489488023521 is a wasteful number, since it uses less digits than its factorization.

489488023521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29142 (or 29139 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 54.

The spelling of 489488023521 in words is "four hundred eighty-nine billion, four hundred eighty-eight million, twenty-three thousand, five hundred twenty-one".