52171887019989 has 64 divisors (see below), whose sum is σ = 79538007859200. Its totient is φ = 30132604972800.

The previous prime is 52171887019981. The next prime is 52171887019991. The reversal of 52171887019989 is 98991078817125.

It is a happy number.

It is not a de Polignac number, because 52171887019989 - 2³ = 52171887019981 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 52171887019989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52171887019981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16740427 + ... + 19610855.

It is an arithmetic number, because the mean of its divisors is an integer number (1242781372800).

Almost surely, 2^{52171887019989} is an apocalyptic number.

It is an amenable number.

52171887019989 is a deficient number, since it is larger than the sum of its proper divisors (27366120839211).

52171887019989 is a wasteful number, since it uses less digits than its factorization.

52171887019989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2870746.

The product of its (nonzero) digits is 182891520, while the sum is 75.

The spelling of 52171887019989 in words is "fifty-two trillion, one hundred seventy-one billion, eight hundred eighty-seven million, nineteen thousand, nine hundred eighty-nine".