166502461612111 has 4 divisors (see below), whose sum is σ = 175265749065400. Its totient is φ = 157739174158824.

The previous prime is 166502461612103. The next prime is 166502461612127. The reversal of 166502461612111 is 111216164205661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166502461612111 - 2³ = 166502461612103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166502461612511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4381643726616 + ... + 4381643726653.

It is an arithmetic number, because the mean of its divisors is an integer number (43816437266350).

Almost surely, 2^{166502461612111} is an apocalyptic number.

166502461612111 is a deficient number, since it is larger than the sum of its proper divisors (8763287453289).

166502461612111 is an equidigital number, since it uses as much as digits as its factorization.

166502461612111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8763287453288.

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 166502461612111 in words is "one hundred sixty-six trillion, five hundred two billion, four hundred sixty-one million, six hundred twelve thousand, one hundred eleven".