52168605521 has 8 divisors (see below), whose sum is σ = 52238943744. Its totient is φ = 52098306480.

The previous prime is 52168605457. The next prime is 52168605529. The reversal of 52168605521 is 12550686125.

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

It is a cyclic number.

It is not a de Polignac number, because 52168605521 - 2⁶ = 52168605457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52168605529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3427490 + ... + 3442676.

It is an arithmetic number, because the mean of its divisors is an integer number (6529867968).

Almost surely, 2^52168605521 is an apocalyptic number.

It is an amenable number.

52168605521 is a deficient number, since it is larger than the sum of its proper divisors (70338223).

52168605521 is a wasteful number, since it uses less digits than its factorization.

52168605521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19591.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 52168605521 in words is "fifty-two billion, one hundred sixty-eight million, six hundred five thousand, five hundred twenty-one".