166301862901 has 2 divisors, whose sum is σ = 166301862902. Its totient is φ = 166301862900.

The previous prime is 166301862899. The next prime is 166301862943. The reversal of 166301862901 is 109268103661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165767051025 + 534811876 = 407145^2 + 23126^2 .

It is a cyclic number.

It is not a de Polignac number, because 166301862901 - 2¹ = 166301862899 is a prime.

Together with 166301862899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166301862401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83150931450 + 83150931451.

It is an arithmetic number, because the mean of its divisors is an integer number (83150931451).

Almost surely, 2^166301862901 is an apocalyptic number.

It is an amenable number.

166301862901 is a deficient number, since it is larger than the sum of its proper divisors (1).

166301862901 is an equidigital number, since it uses as much as digits as its factorization.

166301862901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 166301862901 in words is "one hundred sixty-six billion, three hundred one million, eight hundred sixty-two thousand, nine hundred one".