66067883255424 has 128 divisors (see below), whose sum is σ = 178899262761600. Its totient is φ = 21595594715136.

The previous prime is 66067883255389. The next prime is 66067883255443. The reversal of 66067883255424 is 42455238876066.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×66067883255424³ (a number of 42 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37377582 + ... + 39105234.

It is an arithmetic number, because the mean of its divisors is an integer number (1397650490325).

Almost surely, 2^{66067883255424} is an apocalyptic number.

66067883255424 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66067883255424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89449631380800).

66067883255424 is an abundant number, since it is smaller than the sum of its proper divisors (112831379506176).

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

66067883255424 is a wasteful number, since it uses less digits than its factorization.

66067883255424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729602 (or 1729590 counting only the distinct ones).

The product of its (nonzero) digits is 464486400, while the sum is 66.

The spelling of 66067883255424 in words is "sixty-six trillion, sixty-seven billion, eight hundred eighty-three million, two hundred fifty-five thousand, four hundred twenty-four".