666618802202 has 32 divisors (see below), whose sum is σ = 1009545928704. Its totient is φ = 330120288000.

The previous prime is 666618802169. The next prime is 666618802207. The reversal of 666618802202 is 202208816666.

It is not an unprimeable number, because it can be changed into a prime (666618802207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146154002 + ... + 146158562.

It is an arithmetic number, because the mean of its divisors is an integer number (31548310272).

Almost surely, 2^666618802202 is an apocalyptic number.

666618802202 is a deficient number, since it is larger than the sum of its proper divisors (342927126502).

666618802202 is a wasteful number, since it uses less digits than its factorization.

666618802202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6254.

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 666618802202 in words is "six hundred sixty-six billion, six hundred eighteen million, eight hundred two thousand, two hundred two".