66872124717180 has 24 divisors (see below), whose sum is σ = 187241949208272. Its totient is φ = 17832566591232.

The previous prime is 66872124717157. The next prime is 66872124717199. The reversal of 66872124717180 is 8171742127866.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 1114535411953 = 66872124717180 / (6 + 6 + 8 + 7 + 2 + 1 + 2 + 4 + 7 + 1 + 7 + 1 + 8 + 0).

It is a congruent number.

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, 557267705917 + ... + 557267706036.

It is an arithmetic number, because the mean of its divisors is an integer number (7801747883678).

Almost surely, 2^{66872124717180} is an apocalyptic number.

66872124717180 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66872124717180 is an abundant number, since it is smaller than the sum of its proper divisors (120369824491092).

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

66872124717180 is a wasteful number, since it uses less digits than its factorization.

66872124717180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114535411965 (or 1114535411963 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 60.

The spelling of 66872124717180 in words is "sixty-six trillion, eight hundred seventy-two billion, one hundred twenty-four million, seven hundred seventeen thousand, one hundred eighty".