664310564736 has 1152 divisors, whose sum is σ = 2402341079040. Its totient is φ = 161625784320.

The previous prime is 664310564707. The next prime is 664310564791. The reversal of 664310564736 is 637465013466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2267271406 + ... + 2267271698.

It is an arithmetic number, because the mean of its divisors is an integer number (2085365520).

Almost surely, 2^664310564736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 664310564736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201170539520).

664310564736 is an abundant number, since it is smaller than the sum of its proper divisors (1738030514304).

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

664310564736 is a wasteful number, since it uses less digits than its factorization.

664310564736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 372 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 51.

The spelling of 664310564736 in words is "six hundred sixty-four billion, three hundred ten million, five hundred sixty-four thousand, seven hundred thirty-six".