166075032499 has 2 divisors, whose sum is σ = 166075032500. Its totient is φ = 166075032498.

The previous prime is 166075032493. The next prime is 166075032517. The reversal of 166075032499 is 994230570661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166075032499 - 2³ = 166075032491 is a prime.

It is not a weakly prime, because it can be changed into another prime (166075032491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83037516249 + 83037516250.

It is an arithmetic number, because the mean of its divisors is an integer number (83037516250).

Almost surely, 2^166075032499 is an apocalyptic number.

166075032499 is a deficient number, since it is larger than the sum of its proper divisors (1).

166075032499 is an equidigital number, since it uses as much as digits as its factorization.

166075032499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 52.

The spelling of 166075032499 in words is "one hundred sixty-six billion, seventy-five million, thirty-two thousand, four hundred ninety-nine".