66195752059 has 2 divisors, whose sum is σ = 66195752060. Its totient is φ = 66195752058.

The previous prime is 66195752057. The next prime is 66195752131. The reversal of 66195752059 is 95025759166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66195752059 - 2¹ = 66195752057 is a prime.

It is a super-3 number, since 3×66195752059³ (a number of 33 digits) contains 333 as substring.

Together with 66195752057, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66195752057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33097876029 + 33097876030.

It is an arithmetic number, because the mean of its divisors is an integer number (33097876030).

Almost surely, 2^66195752059 is an apocalyptic number.

66195752059 is a deficient number, since it is larger than the sum of its proper divisors (1).

66195752059 is an equidigital number, since it uses as much as digits as its factorization.

66195752059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5103000, while the sum is 55.

The spelling of 66195752059 in words is "sixty-six billion, one hundred ninety-five million, seven hundred fifty-two thousand, fifty-nine".