666005165202 has 32 divisors (see below), whose sum is σ = 1467832500288. Its totient is φ = 200158975296.

The previous prime is 666005165149. The next prime is 666005165209. The reversal of 666005165202 is 202561500666.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (666005165209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99281853 + ... + 99288560.

It is an arithmetic number, because the mean of its divisors is an integer number (45869765634).

Almost surely, 2^666005165202 is an apocalyptic number.

666005165202 is an abundant number, since it is smaller than the sum of its proper divisors (801827335086).

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

666005165202 is a wasteful number, since it uses less digits than its factorization.

666005165202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198570474.

The product of its (nonzero) digits is 129600, while the sum is 39.

Adding to 666005165202 its reverse (202561500666), we get a palindrome (868566665868).

The spelling of 666005165202 in words is "six hundred sixty-six billion, five million, one hundred sixty-five thousand, two hundred two".