66215114180 has 24 divisors (see below), whose sum is σ = 140727065472. Its totient is φ = 26166936032.

The previous prime is 66215114179. The next prime is 66215114219. The reversal of 66215114180 is 8141151266.

It is a self number, because there is not a number n which added to its sum of digits gives 66215114180.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19942652 + ... + 19945971.

It is an arithmetic number, because the mean of its divisors is an integer number (5863627728).

Almost surely, 2^66215114180 is an apocalyptic number.

It is an amenable number.

66215114180 is an abundant number, since it is smaller than the sum of its proper divisors (74511951292).

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

66215114180 is a wasteful number, since it uses less digits than its factorization.

66215114180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39888715 (or 39888713 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 66215114180 in words is "sixty-six billion, two hundred fifteen million, one hundred fourteen thousand, one hundred eighty".