66113247701 has 2 divisors, whose sum is σ = 66113247702. Its totient is φ = 66113247700.

The previous prime is 66113247623. The next prime is 66113247719. The reversal of 66113247701 is 10774231166.

66113247701 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 can be written as a sum of positive squares in only one way, i.e., 35906460100 + 30206787601 = 189490^2 + 173801^2 .

It is a cyclic number.

It is not a de Polignac number, because 66113247701 - 2¹⁸ = 66112985557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66113247731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33056623850 + 33056623851.

It is an arithmetic number, because the mean of its divisors is an integer number (33056623851).

Almost surely, 2^66113247701 is an apocalyptic number.

It is an amenable number.

66113247701 is a deficient number, since it is larger than the sum of its proper divisors (1).

66113247701 is an equidigital number, since it uses as much as digits as its factorization.

66113247701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 38.

Adding to 66113247701 its reverse (10774231166), we get a palindrome (76887478867).

The spelling of 66113247701 in words is "sixty-six billion, one hundred thirteen million, two hundred forty-seven thousand, seven hundred one".