664912124800 has 288 divisors, whose sum is σ = 2084417024040. Its totient is φ = 207244800000.

The previous prime is 664912124797. The next prime is 664912124819. The reversal of 664912124800 is 8421219466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1532050 + ... + 1917550.

Almost surely, 2^664912124800 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 664912124800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042208512020).

664912124800 is an abundant number, since it is smaller than the sum of its proper divisors (1419504899240).

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

664912124800 is a wasteful number, since it uses less digits than its factorization.

664912124800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385550 (or 385526 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 664912124800 in words is "six hundred sixty-four billion, nine hundred twelve million, one hundred twenty-four thousand, eight hundred".