66123174485 has 8 divisors (see below), whose sum is σ = 82083940920. Its totient is φ = 51074451904.

The previous prime is 66123174389. The next prime is 66123174583. The reversal of 66123174485 is 58447132166.

It can be written as a sum of positive squares in 4 ways, for example, as 13249391236 + 52873783249 = 115106^2 + 229943^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66123174485 is a prime.

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, 228010802 + ... + 228011091.

It is an arithmetic number, because the mean of its divisors is an integer number (10260492615).

Almost surely, 2^66123174485 is an apocalyptic number.

It is an amenable number.

66123174485 is a deficient number, since it is larger than the sum of its proper divisors (15960766435).

66123174485 is a wasteful number, since it uses less digits than its factorization.

66123174485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456021927.

The product of its digits is 967680, while the sum is 47.

The spelling of 66123174485 in words is "sixty-six billion, one hundred twenty-three million, one hundred seventy-four thousand, four hundred eighty-five".