489017445721 has 4 divisors (see below), whose sum is σ = 558877080832. Its totient is φ = 419157810612.

The previous prime is 489017445629. The next prime is 489017445737. The reversal of 489017445721 is 127544710984.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 489017445721 - 2⁷ = 489017445593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (489017445121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34929817545 + ... + 34929817558.

It is an arithmetic number, because the mean of its divisors is an integer number (139719270208).

Almost surely, 2^489017445721 is an apocalyptic number.

It is an amenable number.

489017445721 is a deficient number, since it is larger than the sum of its proper divisors (69859635111).

489017445721 is an equidigital number, since it uses as much as digits as its factorization.

489017445721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69859635110.

The product of its (nonzero) digits is 2257920, while the sum is 52.

The spelling of 489017445721 in words is "four hundred eighty-nine billion, seventeen million, four hundred forty-five thousand, seven hundred twenty-one".