52173918648 has 24 divisors (see below), whose sum is σ = 141304363200. Its totient is φ = 17391306192.

The previous prime is 52173918619. The next prime is 52173918653. The reversal of 52173918648 is 84681937125.

52173918648 is a `hidden beast` number, since 521 + 7 + 39 + 1 + 86 + 4 + 8 = 666.

52173918648 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 52173918594 and 52173918603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362318808 + ... + 362318951.

It is an arithmetic number, because the mean of its divisors is an integer number (5887681800).

Almost surely, 2^52173918648 is an apocalyptic number.

It is an amenable number.

52173918648 is an abundant number, since it is smaller than the sum of its proper divisors (89130444552).

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

52173918648 is a wasteful number, since it uses less digits than its factorization.

52173918648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724637771 (or 724637764 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The spelling of 52173918648 in words is "fifty-two billion, one hundred seventy-three million, nine hundred eighteen thousand, six hundred forty-eight".