66152625613 has 2 divisors, whose sum is σ = 66152625614. Its totient is φ = 66152625612.

The previous prime is 66152625601. The next prime is 66152625629. The reversal of 66152625613 is 31652625166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66150811204 + 1814409 = 257198^2 + 1347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66152625613 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66152625613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66152625313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33076312806 + 33076312807.

It is an arithmetic number, because the mean of its divisors is an integer number (33076312807).

Almost surely, 2^66152625613 is an apocalyptic number.

It is an amenable number.

66152625613 is a deficient number, since it is larger than the sum of its proper divisors (1).

66152625613 is an equidigital number, since it uses as much as digits as its factorization.

66152625613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 388800, while the sum is 43.

The spelling of 66152625613 in words is "sixty-six billion, one hundred fifty-two million, six hundred twenty-five thousand, six hundred thirteen".