665168075067 has 16 divisors (see below), whose sum is σ = 925664187168. Its totient is φ = 424466814720.

The previous prime is 665168075041. The next prime is 665168075087. The reversal of 665168075067 is 760570861566.

It is not a de Polignac number, because 665168075067 - 2⁶ = 665168075003 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 665168074998 and 665168075016.

It is not an unprimeable number, because it can be changed into a prime (665168075087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51011128 + ... + 51024165.

It is an arithmetic number, because the mean of its divisors is an integer number (57854011698).

Almost surely, 2^665168075067 is an apocalyptic number.

665168075067 is a deficient number, since it is larger than the sum of its proper divisors (260496112101).

665168075067 is a wasteful number, since it uses less digits than its factorization.

665168075067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102035390.

The product of its (nonzero) digits is 12700800, while the sum is 57.

The spelling of 665168075067 in words is "six hundred sixty-five billion, one hundred sixty-eight million, seventy-five thousand, sixty-seven".