866130134504071 has 2 divisors, whose sum is σ = 866130134504072. Its totient is φ = 866130134504070.

The previous prime is 866130134504039. The next prime is 866130134504077. The reversal of 866130134504071 is 170405431031668.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 866130134504071 - 2⁵ = 866130134504039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (866130134504077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 433065067252035 + 433065067252036.

It is an arithmetic number, because the mean of its divisors is an integer number (433065067252036).

Almost surely, 2^{866130134504071} is an apocalyptic number.

866130134504071 is a deficient number, since it is larger than the sum of its proper divisors (1).

866130134504071 is an equidigital number, since it uses as much as digits as its factorization.

866130134504071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 866130134504071 in words is "eight hundred sixty-six trillion, one hundred thirty billion, one hundred thirty-four million, five hundred four thousand, seventy-one".