66054210113 has 2 divisors, whose sum is σ = 66054210114. Its totient is φ = 66054210112.

The previous prime is 66054210037. The next prime is 66054210119. The reversal of 66054210113 is 31101245066.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43335581584 + 22718628529 = 208172^2 + 150727^2 .

It is a cyclic number.

It is not a de Polignac number, because 66054210113 - 2⁸ = 66054209857 is a prime.

It is not a weakly prime, because it can be changed into another prime (66054210119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33027105056 + 33027105057.

It is an arithmetic number, because the mean of its divisors is an integer number (33027105057).

Almost surely, 2^66054210113 is an apocalyptic number.

It is an amenable number.

66054210113 is a deficient number, since it is larger than the sum of its proper divisors (1).

66054210113 is an equidigital number, since it uses as much as digits as its factorization.

66054210113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 66054210113 its reverse (31101245066), we get a palindrome (97155455179).

The spelling of 66054210113 in words is "sixty-six billion, fifty-four million, two hundred ten thousand, one hundred thirteen".