66115645226301 has 16 divisors (see below), whose sum is σ = 96168351451968. Its totient is φ = 40070029593600.

The previous prime is 66115645226251. The next prime is 66115645226329. The reversal of 66115645226301 is 10362254651166.

It is a happy number.

It is not a de Polignac number, because 66115645226301 - 2¹⁰ = 66115645225277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66115645226341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35402205 + ... + 37222941.

It is an arithmetic number, because the mean of its divisors is an integer number (6010521965748).

Almost surely, 2^{66115645226301} is an apocalyptic number.

It is an amenable number.

66115645226301 is a deficient number, since it is larger than the sum of its proper divisors (30052706225667).

66115645226301 is a wasteful number, since it uses less digits than its factorization.

66115645226301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921132.

The product of its (nonzero) digits is 1555200, while the sum is 48.

Adding to 66115645226301 its reverse (10362254651166), we get a palindrome (76477899877467).

The spelling of 66115645226301 in words is "sixty-six trillion, one hundred fifteen billion, six hundred forty-five million, two hundred twenty-six thousand, three hundred one".