66627727045 has 16 divisors (see below), whose sum is σ = 87429948480. Its totient is φ = 48340864000.

The previous prime is 66627727021. The next prime is 66627727051. The reversal of 66627727045 is 54072772666.

It is not a de Polignac number, because 66627727045 - 2⁵ = 66627727013 is a prime.

It is a super-2 number, since 2×66627727045² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66627726983 and 66627727001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1422556 + ... + 1468645.

It is an arithmetic number, because the mean of its divisors is an integer number (5464371780).

Almost surely, 2^66627727045 is an apocalyptic number.

It is an amenable number.

66627727045 is a deficient number, since it is larger than the sum of its proper divisors (20802221435).

66627727045 is a wasteful number, since it uses less digits than its factorization.

66627727045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891636.

The product of its (nonzero) digits is 5927040, while the sum is 52.

The spelling of 66627727045 in words is "sixty-six billion, six hundred twenty-seven million, seven hundred twenty-seven thousand, forty-five".