66130367971 has 2 divisors, whose sum is σ = 66130367972. Its totient is φ = 66130367970.

The previous prime is 66130367951. The next prime is 66130368037. The reversal of 66130367971 is 17976303166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66130367971 - 2¹⁹ = 66129843683 is a prime.

It is not a weakly prime, because it can be changed into another prime (66130367951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33065183985 + 33065183986.

It is an arithmetic number, because the mean of its divisors is an integer number (33065183986).

Almost surely, 2^66130367971 is an apocalyptic number.

66130367971 is a deficient number, since it is larger than the sum of its proper divisors (1).

66130367971 is an equidigital number, since it uses as much as digits as its factorization.

66130367971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 857304, while the sum is 49.

The spelling of 66130367971 in words is "sixty-six billion, one hundred thirty million, three hundred sixty-seven thousand, nine hundred seventy-one".