66173271741 has 24 divisors (see below), whose sum is σ = 97442126496. Its totient is φ = 43258681440.

The previous prime is 66173271721. The next prime is 66173271751. The reversal of 66173271741 is 14717237166.

66173271741 is a `hidden beast` number, since 6 + 617 + 3 + 27 + 1 + 7 + 4 + 1 = 666.

It is not a de Polignac number, because 66173271741 - 2⁵ = 66173271709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66173271701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 825546 + ... + 902148.

It is an arithmetic number, because the mean of its divisors is an integer number (4060088604).

Almost surely, 2^66173271741 is an apocalyptic number.

It is an amenable number.

66173271741 is a deficient number, since it is larger than the sum of its proper divisors (31268854755).

66173271741 is a wasteful number, since it uses less digits than its factorization.

66173271741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78473 (or 78470 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The spelling of 66173271741 in words is "sixty-six billion, one hundred seventy-three million, two hundred seventy-one thousand, seven hundred forty-one".