66026241338501 has 2 divisors, whose sum is σ = 66026241338502. Its totient is φ = 66026241338500.

The previous prime is 66026241338459. The next prime is 66026241338579. The reversal of 66026241338501 is 10583314262066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65153793804100 + 872447534401 = 8071790^2 + 934049^2 .

It is a cyclic number.

It is not a de Polignac number, because 66026241338501 - 2⁶ = 66026241338437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66026241338201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33013120669250 + 33013120669251.

It is an arithmetic number, because the mean of its divisors is an integer number (33013120669251).

Almost surely, 2^{66026241338501} is an apocalyptic number.

It is an amenable number.

66026241338501 is a deficient number, since it is larger than the sum of its proper divisors (1).

66026241338501 is an equidigital number, since it uses as much as digits as its factorization.

66026241338501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 47.

The spelling of 66026241338501 in words is "sixty-six trillion, twenty-six billion, two hundred forty-one million, three hundred thirty-eight thousand, five hundred one".