66942592080 has 320 divisors, whose sum is σ = 268856125440. Its totient is φ = 13380691968.

The previous prime is 66942592069. The next prime is 66942592103. The reversal of 66942592080 is 8029524966.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 334299 + ... + 495621.

It is an arithmetic number, because the mean of its divisors is an integer number (840175392).

Almost surely, 2^66942592080 is an apocalyptic number.

66942592080 is a gapful number since it is divisible by the number (60) 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 66942592080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134428062720).

66942592080 is an abundant number, since it is smaller than the sum of its proper divisors (201913533360).

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

66942592080 is a wasteful number, since it uses less digits than its factorization.

66942592080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161378 (or 161372 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 66942592080 in words is "sixty-six billion, nine hundred forty-two million, five hundred ninety-two thousand, eighty".