665226484622566 has 4 divisors (see below), whose sum is σ = 997839726933852. Its totient is φ = 332613242311282.

The previous prime is 665226484622473. The next prime is 665226484622591.

665226484622566 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 665226484622495 and 665226484622504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166306621155640 + ... + 166306621155643.

It is an arithmetic number, because the mean of its divisors is an integer number (249459931733463).

Almost surely, 2^{665226484622566} is an apocalyptic number.

665226484622566 is a deficient number, since it is larger than the sum of its proper divisors (332613242311286).

665226484622566 is a wasteful number, since it uses less digits than its factorization.

665226484622566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332613242311285.

The product of its digits is 2388787200, while the sum is 70.

The spelling of 665226484622566 in words is "six hundred sixty-five trillion, two hundred twenty-six billion, four hundred eighty-four million, six hundred twenty-two thousand, five hundred sixty-six".