6666437120 has 320 divisors, whose sum is σ = 19657313280. Its totient is φ = 2116288512.

The previous prime is 6666437083. The next prime is 6666437159. The reversal of 6666437120 is 217346666.

It is a tau number, because it is divible by the number of its divisors (320).

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, 24066422 + ... + 24066698.

It is an arithmetic number, because the mean of its divisors is an integer number (61429104).

Almost surely, 2^6666437120 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 6666437120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9828656640).

6666437120 is an abundant number, since it is smaller than the sum of its proper divisors (12990876160).

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

6666437120 is a wasteful number, since it uses less digits than its factorization.

6666437120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 6666437120 is about 81648.2524001586. The cubic root of 6666437120 is about 1882.0504563458.

The spelling of 6666437120 in words is "six billion, six hundred sixty-six million, four hundred thirty-seven thousand, one hundred twenty".