520166616656 has 10 divisors (see below), whose sum is σ = 1007822819802. Its totient is φ = 260083308320.

The previous prime is 520166616617. The next prime is 520166616679. The reversal of 520166616656 is 656616661025.

It can be written as a sum of positive squares in only one way, i.e., 519494977600 + 671639056 = 720760^2 + 25916^2 .

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, 16255206755 + ... + 16255206786.

Almost surely, 2^520166616656 is an apocalyptic number.

It is an amenable number.

520166616656 is a deficient number, since it is larger than the sum of its proper divisors (487656203146).

520166616656 is a wasteful number, since it uses less digits than its factorization.

520166616656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32510413549 (or 32510413543 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 50.

The spelling of 520166616656 in words is "five hundred twenty billion, one hundred sixty-six million, six hundred sixteen thousand, six hundred fifty-six".