66522940027 has 4 divisors (see below), whose sum is σ = 66674473360. Its totient is φ = 66371406696.

The previous prime is 66522940013. The next prime is 66522940037. The reversal of 66522940027 is 72004922566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72004922566 = 2 ⋅36002461283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66522940027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66522940037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75766008 + ... + 75766885.

It is an arithmetic number, because the mean of its divisors is an integer number (16668618340).

Almost surely, 2^66522940027 is an apocalyptic number.

66522940027 is a deficient number, since it is larger than the sum of its proper divisors (151533333).

66522940027 is a wasteful number, since it uses less digits than its factorization.

66522940027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151533332.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 66522940027 in words is "sixty-six billion, five hundred twenty-two million, nine hundred forty thousand, twenty-seven".