516166661616 has 40 divisors (see below), whose sum is σ = 1335264787584. Its totient is φ = 171818877120.

The previous prime is 516166661587. The next prime is 516166661671. The reversal of 516166661616 is 616166661615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7360890 + ... + 7430681.

Almost surely, 2^516166661616 is an apocalyptic number.

It is an amenable number.

516166661616 is an abundant number, since it is smaller than the sum of its proper divisors (819098125968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

516166661616 is a wasteful number, since it uses less digits than its factorization.

516166661616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14792309 (or 14792303 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

Subtracting 516166661616 from its reverse (616166661615), we obtain a palindrome (99999999999).

The spelling of 516166661616 in words is "five hundred sixteen billion, one hundred sixty-six million, six hundred sixty-one thousand, six hundred sixteen".