166036632547 has 2 divisors, whose sum is σ = 166036632548. Its totient is φ = 166036632546.

The previous prime is 166036632511. The next prime is 166036632613. The reversal of 166036632547 is 745236630661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166036632547 - 2¹¹ = 166036630499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166036632547.

It is not a weakly prime, because it can be changed into another prime (166036632947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83018316273 + 83018316274.

It is an arithmetic number, because the mean of its divisors is an integer number (83018316274).

Almost surely, 2^166036632547 is an apocalyptic number.

166036632547 is a deficient number, since it is larger than the sum of its proper divisors (1).

166036632547 is an equidigital number, since it uses as much as digits as its factorization.

166036632547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 166036632547 in words is "one hundred sixty-six billion, thirty-six million, six hundred thirty-two thousand, five hundred forty-seven".