66125615371 has 2 divisors, whose sum is σ = 66125615372. Its totient is φ = 66125615370.

The previous prime is 66125615321. The next prime is 66125615383. The reversal of 66125615371 is 17351652166.

66125615371 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66125615371 - 2⁷ = 66125615243 is a prime.

It is not a weakly prime, because it can be changed into another prime (66125615321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33062807685 + 33062807686.

It is an arithmetic number, because the mean of its divisors is an integer number (33062807686).

Almost surely, 2^66125615371 is an apocalyptic number.

66125615371 is a deficient number, since it is larger than the sum of its proper divisors (1).

66125615371 is an equidigital number, since it uses as much as digits as its factorization.

66125615371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 43.

The spelling of 66125615371 in words is "sixty-six billion, one hundred twenty-five million, six hundred fifteen thousand, three hundred seventy-one".