666165310002 has 48 divisors (see below), whose sum is σ = 1529140623192. Its totient is φ = 208872829440.

The previous prime is 666165310001. The next prime is 666165310049. The reversal of 666165310002 is 200013561666.

666165310002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 536364352161 + 129800957841 = 732369^2 + 360279^2 .

It is a super-2 number, since 2×666165310002² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (666165310001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92473 + ... + 1157964.

Almost surely, 2^666165310002 is an apocalyptic number.

666165310002 is an abundant number, since it is smaller than the sum of its proper divisors (862975313190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

666165310002 is a wasteful number, since it uses less digits than its factorization.

666165310002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1252203 (or 1252200 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

Adding to 666165310002 its reverse (200013561666), we get a palindrome (866178871668).

The spelling of 666165310002 in words is "six hundred sixty-six billion, one hundred sixty-five million, three hundred ten thousand, two".