66349232089 has 12 divisors (see below), whose sum is σ = 77189831604. Its totient is φ = 56864822784.

The previous prime is 66349232011. The next prime is 66349232099. The reversal of 66349232089 is 98023294366.

It can be written as a sum of positive squares in 2 ways, for example, as 16311121225 + 50038110864 = 127715^2 + 223692^2 .

It is not a de Polignac number, because 66349232089 - 2²¹ = 66347134937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66349232099) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439689 + ... + 570985.

It is an arithmetic number, because the mean of its divisors is an integer number (6432485967).

Almost surely, 2^66349232089 is an apocalyptic number.

It is an amenable number.

66349232089 is a deficient number, since it is larger than the sum of its proper divisors (10840599515).

66349232089 is a wasteful number, since it uses less digits than its factorization.

66349232089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141624 (or 141617 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 52.

The spelling of 66349232089 in words is "sixty-six billion, three hundred forty-nine million, two hundred thirty-two thousand, eighty-nine".