66545255105 has 16 divisors (see below), whose sum is σ = 91532887680. Its totient is φ = 45495620352.

The previous prime is 66545255089. The next prime is 66545255111. The reversal of 66545255105 is 50155254566.

It is not a de Polignac number, because 66545255105 - 2⁴ = 66545255089 is a prime.

It is a super-2 number, since 2×66545255105² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2809115 + ... + 2832704.

It is an arithmetic number, because the mean of its divisors is an integer number (5720805480).

Almost surely, 2^66545255105 is an apocalyptic number.

It is an amenable number.

66545255105 is a deficient number, since it is larger than the sum of its proper divisors (24987632575).

66545255105 is a wasteful number, since it uses less digits than its factorization.

66545255105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642168.

The product of its (nonzero) digits is 900000, while the sum is 44.

The spelling of 66545255105 in words is "sixty-six billion, five hundred forty-five million, two hundred fifty-five thousand, one hundred five".