664625160330 has 64 divisors (see below), whose sum is σ = 1599869232000. Its totient is φ = 176703891200.

The previous prime is 664625160319. The next prime is 664625160383. The reversal of 664625160330 is 33061526466.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31486780 + ... + 31507880.

It is an arithmetic number, because the mean of its divisors is an integer number (24997956750).

Almost surely, 2^664625160330 is an apocalyptic number.

664625160330 is an abundant number, since it is smaller than the sum of its proper divisors (935244071670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

664625160330 is a wasteful number, since it uses less digits than its factorization.

664625160330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24199.

The product of its (nonzero) digits is 466560, while the sum is 42.

Adding to 664625160330 its reverse (33061526466), we get a palindrome (697686686796).

The spelling of 664625160330 in words is "six hundred sixty-four billion, six hundred twenty-five million, one hundred sixty thousand, three hundred thirty".