66632211458 has 18 divisors (see below), whose sum is σ = 100427544009. Its totient is φ = 33157124712.

The previous prime is 66632211413. The next prime is 66632211509. The reversal of 66632211458 is 85411223666.

It can be written as a sum of positive squares in 2 ways, for example, as 62758767289 + 3873444169 = 250517^2 + 62237^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=182527.

It is a Duffinian 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 8 ways as a sum of consecutive naturals, for example, 127403585 + ... + 127404107.

Almost surely, 2^66632211458 is an apocalyptic number.

66632211458 is a deficient number, since it is larger than the sum of its proper divisors (33795332551).

66632211458 is an frugal number, since it uses more digits than its factorization.

66632211458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 874 counting only the distinct ones).

The product of its digits is 414720, while the sum is 44.

The spelling of 66632211458 in words is "sixty-six billion, six hundred thirty-two million, two hundred eleven thousand, four hundred fifty-eight".