6664554034644 has 72 divisors (see below), whose sum is σ = 17108061809440. Its totient is φ = 2017762971840.

The previous prime is 6664554034627. The next prime is 6664554034661. The reversal of 6664554034644 is 4464304554666.

It is an interprime number because it is at equal distance from previous prime (6664554034627) and next prime (6664554034661).

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, 412999 + ... + 3674190.

Almost surely, 2^{6664554034644} 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 6664554034644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8554030904720).

6664554034644 is an abundant number, since it is smaller than the sum of its proper divisors (10443507774796).

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

6664554034644 is a wasteful number, since it uses less digits than its factorization.

6664554034644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4088341 (or 4088328 counting only the distinct ones).

The product of its (nonzero) digits is 99532800, while the sum is 57.

The spelling of 6664554034644 in words is "six trillion, six hundred sixty-four billion, five hundred fifty-four million, thirty-four thousand, six hundred forty-four".