665110160129 has 4 divisors (see below), whose sum is σ = 673529276160. Its totient is φ = 656691044100.

The previous prime is 665110160083. The next prime is 665110160131. The reversal of 665110160129 is 921061011566.

665110160129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 665110160129 - 2²⁴ = 665093382913 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 665110160092 and 665110160101.

It is not an unprimeable number, because it can be changed into a prime (665110160929) 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, 4209557897 + ... + 4209558054.

It is an arithmetic number, because the mean of its divisors is an integer number (168382319040).

Almost surely, 2^665110160129 is an apocalyptic number.

It is an amenable number.

665110160129 is a deficient number, since it is larger than the sum of its proper divisors (8419116031).

665110160129 is an equidigital number, since it uses as much as digits as its factorization.

665110160129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8419116030.

The product of its (nonzero) digits is 19440, while the sum is 38.

The spelling of 665110160129 in words is "six hundred sixty-five billion, one hundred ten million, one hundred sixty thousand, one hundred twenty-nine".