6660126816 has 96 divisors (see below), whose sum is σ = 19995107328. Its totient is φ = 1901491200.

The previous prime is 6660126763. The next prime is 6660126817. The reversal of 6660126816 is 6186210666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660126817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1207521 + ... + 1213023.

It is an arithmetic number, because the mean of its divisors is an integer number (208282368).

Almost surely, 2^6660126816 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 6660126816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9997553664).

6660126816 is an abundant number, since it is smaller than the sum of its proper divisors (13334980512).

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

6660126816 is a wasteful number, since it uses less digits than its factorization.

6660126816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7324 (or 7316 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 6660126816 is about 81609.6000235266. The cubic root of 6660126816 is about 1881.4564329033.

The spelling of 6660126816 in words is "six billion, six hundred sixty million, one hundred twenty-six thousand, eight hundred sixteen".