102066661110181 has 4 divisors (see below), whose sum is σ = 102068433558432. Its totient is φ = 102064888661932.

The previous prime is 102066661110179. The next prime is 102066661110187. The reversal of 102066661110181 is 181011166660201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102066661110181 - 2¹ = 102066661110179 is a prime.

It is a super-2 number, since 2×102066661110181² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102066661110187) 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 in 3 ways as a sum of consecutive naturals, for example, 886137745 + ... + 886252918.

It is an arithmetic number, because the mean of its divisors is an integer number (25517108389608).

Almost surely, 2^{102066661110181} is an apocalyptic number.

It is an amenable number.

102066661110181 is a deficient number, since it is larger than the sum of its proper divisors (1772448251).

102066661110181 is an equidigital number, since it uses as much as digits as its factorization.

102066661110181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772448250.

The product of its (nonzero) digits is 20736, while the sum is 40.

The spelling of 102066661110181 in words is "one hundred two trillion, sixty-six billion, six hundred sixty-one million, one hundred ten thousand, one hundred eighty-one".