66058318872 has 192 divisors, whose sum is σ = 227298140160. Its totient is φ = 16859923200.

The previous prime is 66058318793. The next prime is 66058318877. The reversal of 66058318872 is 27881385066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66058318877) 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 47 ways as a sum of consecutive naturals, for example, 40497 + ... + 365727.

It is an arithmetic number, because the mean of its divisors is an integer number (1183844480).

Almost surely, 2^66058318872 is an apocalyptic number.

66058318872 is a gapful number since it is divisible by the number (62) 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 66058318872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113649070080).

66058318872 is an abundant number, since it is smaller than the sum of its proper divisors (161239821288).

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

66058318872 is a wasteful number, since it uses less digits than its factorization.

66058318872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325294 (or 325287 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 66058318872 in words is "sixty-six billion, fifty-eight million, three hundred eighteen thousand, eight hundred seventy-two".