66479418208 has 96 divisors (see below), whose sum is σ = 153055828800. Its totient is φ = 27835176960.

The previous prime is 66479418179. The next prime is 66479418233. The reversal of 66479418208 is 80281497466.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2019610 + ... + 2052262.

It is an arithmetic number, because the mean of its divisors is an integer number (1594331550).

Almost surely, 2^66479418208 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 66479418208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76527914400).

66479418208 is an abundant number, since it is smaller than the sum of its proper divisors (86576410592).

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

66479418208 is a wasteful number, since it uses less digits than its factorization.

66479418208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32880 (or 32872 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 66479418208 in words is "sixty-six billion, four hundred seventy-nine million, four hundred eighteen thousand, two hundred eight".