166132530631 has 2 divisors, whose sum is σ = 166132530632. Its totient is φ = 166132530630.

The previous prime is 166132530593. The next prime is 166132530671. The reversal of 166132530631 is 136035231661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166132530631 - 2⁹ = 166132530119 is a prime.

It is a super-2 number, since 2×166132530631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166132530671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83066265315 + 83066265316.

It is an arithmetic number, because the mean of its divisors is an integer number (83066265316).

Almost surely, 2^166132530631 is an apocalyptic number.

166132530631 is a deficient number, since it is larger than the sum of its proper divisors (1).

166132530631 is an equidigital number, since it uses as much as digits as its factorization.

166132530631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 37.

The spelling of 166132530631 in words is "one hundred sixty-six billion, one hundred thirty-two million, five hundred thirty thousand, six hundred thirty-one".