666466365602 has 4 divisors (see below), whose sum is σ = 999699548406. Its totient is φ = 333233182800.

The previous prime is 666466365601. The next prime is 666466365619. The reversal of 666466365602 is 206563664666.

666466365602 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.

It can be written as a sum of positive squares in only one way, i.e., 572805271921 + 93661093681 = 756839^2 + 306041^2 .

It is not an unprimeable number, because it can be changed into a prime (666466365601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166616591399 + ... + 166616591402.

Almost surely, 2^666466365602 is an apocalyptic number.

666466365602 is a deficient number, since it is larger than the sum of its proper divisors (333233182804).

666466365602 is a wasteful number, since it uses less digits than its factorization.

666466365602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333233182803.

The product of its (nonzero) digits is 33592320, while the sum is 56.

The spelling of 666466365602 in words is "six hundred sixty-six billion, four hundred sixty-six million, three hundred sixty-five thousand, six hundred two".