66179206980 has 192 divisors, whose sum is σ = 213248851200. Its totient is φ = 17018588160.

The previous prime is 66179206979. The next prime is 66179206991. The reversal of 66179206980 is 8960297166.

66179206980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16174735 + ... + 16178825.

It is an arithmetic number, because the mean of its divisors is an integer number (1110671100).

Almost surely, 2^66179206980 is an apocalyptic number.

66179206980 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 66179206980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106624425600).

66179206980 is an abundant number, since it is smaller than the sum of its proper divisors (147069644220).

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

66179206980 is a wasteful number, since it uses less digits than its factorization.

66179206980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171 (or 5163 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 66179206980 in words is "sixty-six billion, one hundred seventy-nine million, two hundred six thousand, nine hundred eighty".