665514343415566 has 8 divisors (see below), whose sum is σ = 998298589940784. Its totient is φ = 332748146768640.

The previous prime is 665514343415563. The next prime is 665514343415587.

665514343415566 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×665514343415566² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 665514343415498 and 665514343415507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665514343415563) 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, 4512377395 + ... + 4512524878.

It is an arithmetic number, because the mean of its divisors is an integer number (124787323742598).

Almost surely, 2^{665514343415566} is an apocalyptic number.

665514343415566 is a deficient number, since it is larger than the sum of its proper divisors (332784246525218).

665514343415566 is a wasteful number, since it uses less digits than its factorization.

665514343415566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9024939146.

The product of its digits is 466560000, while the sum is 64.

The spelling of 665514343415566 in words is "six hundred sixty-five trillion, five hundred fourteen billion, three hundred forty-three million, four hundred fifteen thousand, five hundred sixty-six".