66539374592143 has 2 divisors, whose sum is σ = 66539374592144. Its totient is φ = 66539374592142.

The previous prime is 66539374592029. The next prime is 66539374592153. The reversal of 66539374592143 is 34129547393566.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66539374592143 - 2¹⁷ = 66539374461071 is a prime.

It is a super-2 number, since 2×66539374592143² (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 (66539374592153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33269687296071 + 33269687296072.

It is an arithmetic number, because the mean of its divisors is an integer number (33269687296072).

Almost surely, 2^{66539374592143} is an apocalyptic number.

66539374592143 is a deficient number, since it is larger than the sum of its proper divisors (1).

66539374592143 is an equidigital number, since it uses as much as digits as its factorization.

66539374592143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 440899200, while the sum is 67.

The spelling of 66539374592143 in words is "sixty-six trillion, five hundred thirty-nine billion, three hundred seventy-four million, five hundred ninety-two thousand, one hundred forty-three".