52166855336872 has 16 divisors (see below), whose sum is σ = 97856578803060. Its totient is φ = 26071767656064.

The previous prime is 52166855336801. The next prime is 52166855336951. The reversal of 52166855336872 is 27863355866125.

It can be written as a sum of positive squares in 2 ways, for example, as 42712054418916 + 9454800917956 = 6535446^2 + 3074866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 52166855336798 and 52166855336807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1457482533 + ... + 1457518324.

Almost surely, 2^{52166855336872} is an apocalyptic number.

It is an amenable number.

52166855336872 is a deficient number, since it is larger than the sum of its proper divisors (45689723466188).

52166855336872 is a wasteful number, since it uses less digits than its factorization.

52166855336872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915003100 (or 2915003096 counting only the distinct ones).

The product of its digits is 435456000, while the sum is 67.

The spelling of 52166855336872 in words is "fifty-two trillion, one hundred sixty-six billion, eight hundred fifty-five million, three hundred thirty-six thousand, eight hundred seventy-two".