66622272434 has 16 divisors (see below), whose sum is σ = 108392623416. Its totient is φ = 30586982400.

The previous prime is 66622272427. The next prime is 66622272469. The reversal of 66622272434 is 43427222666.

It can be written as a sum of positive squares in 4 ways, for example, as 46965391225 + 19656881209 = 216715^2 + 140203^2 .

It is a Curzon 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, 23894687 + ... + 23897474.

Almost surely, 2^66622272434 is an apocalyptic number.

66622272434 is a deficient number, since it is larger than the sum of its proper divisors (41770350982).

66622272434 is a wasteful number, since it uses less digits than its factorization.

66622272434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47792221.

The product of its digits is 1161216, while the sum is 44.

The spelling of 66622272434 in words is "sixty-six billion, six hundred twenty-two million, two hundred seventy-two thousand, four hundred thirty-four".