66360402001 has 2 divisors, whose sum is σ = 66360402002. Its totient is φ = 66360402000.

The previous prime is 66360401981. The next prime is 66360402091. The reversal of 66360402001 is 10020406366.

66360402001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43687270225 + 22673131776 = 209015^2 + 150576^2 .

It is a cyclic number.

It is not a de Polignac number, because 66360402001 - 2⁹ = 66360401489 is a prime.

It is not a weakly prime, because it can be changed into another prime (66360402091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33180201000 + 33180201001.

It is an arithmetic number, because the mean of its divisors is an integer number (33180201001).

Almost surely, 2^66360402001 is an apocalyptic number.

It is an amenable number.

66360402001 is a deficient number, since it is larger than the sum of its proper divisors (1).

66360402001 is an equidigital number, since it uses as much as digits as its factorization.

66360402001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 66360402001 its reverse (10020406366), we get a palindrome (76380808367).

The spelling of 66360402001 in words is "sixty-six billion, three hundred sixty million, four hundred two thousand, one".