66060718900 has 72 divisors (see below), whose sum is σ = 156454736256. Its totient is φ = 24011174400.

The previous prime is 66060718877. The next prime is 66060718901. The reversal of 66060718900 is 981706066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66060718901) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2646277 + ... + 2671123.

It is an arithmetic number, because the mean of its divisors is an integer number (2172982448).

Almost surely, 2^66060718900 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 66060718900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78227368128).

66060718900 is an abundant number, since it is smaller than the sum of its proper divisors (90394017356).

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

66060718900 is a wasteful number, since it uses less digits than its factorization.

66060718900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27289 (or 27282 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 66060718900 in words is "sixty-six billion, sixty million, seven hundred eighteen thousand, nine hundred".