664330766289 has 16 divisors (see below), whose sum is σ = 914369938944. Its totient is φ = 428590080000.

The previous prime is 664330766279. The next prime is 664330766321. The reversal of 664330766289 is 982667033466.

It is a happy number.

664330766289 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 664330766289 - 2¹¹ = 664330764241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664330766219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6184539 + ... + 6291039.

It is an arithmetic number, because the mean of its divisors is an integer number (57148121184).

Almost surely, 2^664330766289 is an apocalyptic number.

It is an amenable number.

664330766289 is a deficient number, since it is larger than the sum of its proper divisors (250039172655).

664330766289 is a wasteful number, since it uses less digits than its factorization.

664330766289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173608.

The product of its (nonzero) digits is 47029248, while the sum is 60.

The spelling of 664330766289 in words is "six hundred sixty-four billion, three hundred thirty million, seven hundred sixty-six thousand, two hundred eighty-nine".