166132985471 has 2 divisors, whose sum is σ = 166132985472. Its totient is φ = 166132985470.

The previous prime is 166132985411. The next prime is 166132985483. The reversal of 166132985471 is 174589231661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166132985471 - 2¹⁰ = 166132984447 is a prime.

It is a super-3 number, since 3×166132985471³ (a number of 35 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166132985411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83066492735 + 83066492736.

It is an arithmetic number, because the mean of its divisors is an integer number (83066492736).

Almost surely, 2^166132985471 is an apocalyptic number.

166132985471 is a deficient number, since it is larger than the sum of its proper divisors (1).

166132985471 is an equidigital number, since it uses as much as digits as its factorization.

166132985471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 53.

The spelling of 166132985471 in words is "one hundred sixty-six billion, one hundred thirty-two million, nine hundred eighty-five thousand, four hundred seventy-one".