66868404203 has 4 divisors (see below), whose sum is σ = 66868929960. Its totient is φ = 66867878448.

The previous prime is 66868404193. The next prime is 66868404227. The reversal of 66868404203 is 30240486866.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 66868404203 - 2²² = 66864209899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66868404233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60503 + ... + 370671.

It is an arithmetic number, because the mean of its divisors is an integer number (16717232490).

Almost surely, 2^66868404203 is an apocalyptic number.

66868404203 is a deficient number, since it is larger than the sum of its proper divisors (525757).

66868404203 is a wasteful number, since it uses less digits than its factorization.

66868404203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525756.

The product of its (nonzero) digits is 1327104, while the sum is 47.

The spelling of 66868404203 in words is "sixty-six billion, eight hundred sixty-eight million, four hundred four thousand, two hundred three".