66360107771 has 4 divisors (see below), whose sum is σ = 69245329872. Its totient is φ = 63474885672.

The previous prime is 66360107743. The next prime is 66360107777. The reversal of 66360107771 is 17770106366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66360107771 - 2¹⁴ = 66360091387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66360107777) 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, 1442611016 + ... + 1442611061.

It is an arithmetic number, because the mean of its divisors is an integer number (17311332468).

Almost surely, 2^66360107771 is an apocalyptic number.

66360107771 is a deficient number, since it is larger than the sum of its proper divisors (2885222101).

66360107771 is a wasteful number, since it uses less digits than its factorization.

66360107771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885222100.

The product of its (nonzero) digits is 222264, while the sum is 44.

The spelling of 66360107771 in words is "sixty-six billion, three hundred sixty million, one hundred seven thousand, seven hundred seventy-one".