489578085547 has 2 divisors, whose sum is σ = 489578085548. Its totient is φ = 489578085546.

The previous prime is 489578085523. The next prime is 489578085613. The reversal of 489578085547 is 745580875984.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 489578085547 - 2¹¹ = 489578083499 is a prime.

It is not a weakly prime, because it can be changed into another prime (489578085847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244789042773 + 244789042774.

It is an arithmetic number, because the mean of its divisors is an integer number (244789042774).

Almost surely, 2^489578085547 is an apocalyptic number.

489578085547 is a deficient number, since it is larger than the sum of its proper divisors (1).

489578085547 is an equidigital number, since it uses as much as digits as its factorization.

489578085547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 451584000, while the sum is 70.

The spelling of 489578085547 in words is "four hundred eighty-nine billion, five hundred seventy-eight million, eighty-five thousand, five hundred forty-seven".