66872124717147 has 12 divisors (see below), whose sum is σ = 96600295443600. Its totient is φ = 44578081213008.

The previous prime is 66872124717121. The next prime is 66872124717157. The reversal of 66872124717147 is 74171742127866.

66872124717147 is a `hidden beast` number, since 6 + 6 + 8 + 7 + 2 + 12 + 471 + 7 + 147 = 666.

It is not a de Polignac number, because 66872124717147 - 2⁷ = 66872124717019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66872124717107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 277811772 + ... + 278052377.

It is an arithmetic number, because the mean of its divisors is an integer number (8050024620300).

Almost surely, 2^{66872124717147} is an apocalyptic number.

66872124717147 is a deficient number, since it is larger than the sum of its proper divisors (29728170726453).

66872124717147 is a wasteful number, since it uses less digits than its factorization.

66872124717147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555877522 (or 555877519 counting only the distinct ones).

The product of its digits is 44255232, while the sum is 63.

The spelling of 66872124717147 in words is "sixty-six trillion, eight hundred seventy-two billion, one hundred twenty-four million, seven hundred seventeen thousand, one hundred forty-seven".