66125133671 has 2 divisors, whose sum is σ = 66125133672. Its totient is φ = 66125133670.

The previous prime is 66125133611. The next prime is 66125133719. The reversal of 66125133671 is 17633152166.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66125133671 - 2²⁶ = 66058024807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66125133611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33062566835 + 33062566836.

It is an arithmetic number, because the mean of its divisors is an integer number (33062566836).

Almost surely, 2^66125133671 is an apocalyptic number.

66125133671 is a deficient number, since it is larger than the sum of its proper divisors (1).

66125133671 is an equidigital number, since it uses as much as digits as its factorization.

66125133671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 41.

The spelling of 66125133671 in words is "sixty-six billion, one hundred twenty-five million, one hundred thirty-three thousand, six hundred seventy-one".