66489298373 has 2 divisors, whose sum is σ = 66489298374. Its totient is φ = 66489298372.

The previous prime is 66489298321. The next prime is 66489298429. The reversal of 66489298373 is 37389298466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34811350084 + 31677948289 = 186578^2 + 177983^2 .

It is a cyclic number.

It is not a de Polignac number, because 66489298373 - 2³² = 62194331077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66489298873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33244649186 + 33244649187.

It is an arithmetic number, because the mean of its divisors is an integer number (33244649187).

Almost surely, 2^66489298373 is an apocalyptic number.

It is an amenable number.

66489298373 is a deficient number, since it is larger than the sum of its proper divisors (1).

66489298373 is an equidigital number, since it uses as much as digits as its factorization.

66489298373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94058496, while the sum is 65.

The spelling of 66489298373 in words is "sixty-six billion, four hundred eighty-nine million, two hundred ninety-eight thousand, three hundred seventy-three".