666314291200 has 288 divisors, whose sum is σ = 1678111344000. Its totient is φ = 262356992000.

The previous prime is 666314291197. The next prime is 666314291221. The reversal of 666314291200 is 2192413666.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1391052561 + ... + 1391053039.

It is an arithmetic number, because the mean of its divisors is an integer number (5826775500).

Almost surely, 2^666314291200 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 666314291200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (839055672000).

666314291200 is an abundant number, since it is smaller than the sum of its proper divisors (1011797052800).

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

666314291200 is a wasteful number, since it uses less digits than its factorization.

666314291200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 666314291200 in words is "six hundred sixty-six billion, three hundred fourteen million, two hundred ninety-one thousand, two hundred".