66523340313 has 16 divisors (see below), whose sum is σ = 98613365760. Its totient is φ = 44321772528.

The previous prime is 66523340297. The next prime is 66523340363. The reversal of 66523340313 is 31304332566.

66523340313 is a `hidden beast` number, since 6 + 6 + 5 + 2 + 334 + 0 + 313 = 666.

It is not a de Polignac number, because 66523340313 - 2⁴ = 66523340297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66523340363) 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, 708345 + ... + 796742.

It is an arithmetic number, because the mean of its divisors is an integer number (6163335360).

Almost surely, 2^66523340313 is an apocalyptic number.

It is an amenable number.

66523340313 is a deficient number, since it is larger than the sum of its proper divisors (32090025447).

66523340313 is a wasteful number, since it uses less digits than its factorization.

66523340313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506733 (or 1506727 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

Adding to 66523340313 its reverse (31304332566), we get a palindrome (97827672879).

The spelling of 66523340313 in words is "sixty-six billion, five hundred twenty-three million, three hundred forty thousand, three hundred thirteen".