665114303411566 has 4 divisors (see below), whose sum is σ = 997671455117352. Its totient is φ = 332557151705782.

The previous prime is 665114303411543. The next prime is 665114303411573.

665114303411566 is nontrivially palindromic in base 10.

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

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, 166278575852890 + ... + 166278575852893.

It is an arithmetic number, because the mean of its divisors is an integer number (249417863779338).

Almost surely, 2^{665114303411566} is an apocalyptic number.

665114303411566 is a deficient number, since it is larger than the sum of its proper divisors (332557151705786).

665114303411566 is a wasteful number, since it uses less digits than its factorization.

665114303411566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332557151705785.

The product of its (nonzero) digits is 4665600, while the sum is 52.

It can be divided in two parts, 66511430 and 3411566, that added together give a palindrome (69922996).

The spelling of 665114303411566 in words is "six hundred sixty-five trillion, one hundred fourteen billion, three hundred three million, four hundred eleven thousand, five hundred sixty-six".