66701427197183 has 2 divisors, whose sum is σ = 66701427197184. Its totient is φ = 66701427197182.

The previous prime is 66701427197161. The next prime is 66701427197291. The reversal of 66701427197183 is 38179172410766.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66701427197183 is a prime.

It is a super-2 number, since 2×66701427197183² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66701427197123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33350713598591 + 33350713598592.

It is an arithmetic number, because the mean of its divisors is an integer number (33350713598592).

Almost surely, 2^{66701427197183} is an apocalyptic number.

66701427197183 is a deficient number, since it is larger than the sum of its proper divisors (1).

66701427197183 is an equidigital number, since it uses as much as digits as its factorization.

66701427197183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 62.

The spelling of 66701427197183 in words is "sixty-six trillion, seven hundred one billion, four hundred twenty-seven million, one hundred ninety-seven thousand, one hundred eighty-three".