665876322716 has 48 divisors (see below), whose sum is σ = 1282336272000. Its totient is φ = 300035400000.

The previous prime is 665876322647. The next prime is 665876322767. The reversal of 665876322716 is 617223678566.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2187410 + ... + 2473158.

It is an arithmetic number, because the mean of its divisors is an integer number (26715339000).

Almost surely, 2^665876322716 is an apocalyptic number.

It is an amenable number.

665876322716 is a deficient number, since it is larger than the sum of its proper divisors (616459949284).

665876322716 is a wasteful number, since it uses less digits than its factorization.

665876322716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286226 (or 286224 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 59.

The spelling of 665876322716 in words is "six hundred sixty-five billion, eight hundred seventy-six million, three hundred twenty-two thousand, seven hundred sixteen".