2152171660552 has 16 divisors (see below), whose sum is σ = 4101474681900. Its totient is φ = 1058445078720.

The previous prime is 2152171660547. The next prime is 2152171660553. The reversal of 2152171660552 is 2550661712512.

It can be written as a sum of positive squares in 2 ways, for example, as 1851466390596 + 300705269956 = 1360686^2 + 548366^2 .

It is a super-2 number, since 2×2152171660552² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2152171660499 and 2152171660508.

It is not an unprimeable number, because it can be changed into a prime (2152171660553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2205093427 + ... + 2205094402.

Almost surely, 2^{2152171660552} is an apocalyptic number.

It is an amenable number.

2152171660552 is a deficient number, since it is larger than the sum of its proper divisors (1949303021348).

2152171660552 is a wasteful number, since it uses less digits than its factorization.

2152171660552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4410187896 (or 4410187892 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 2152171660552 in words is "two trillion, one hundred fifty-two billion, one hundred seventy-one million, six hundred sixty thousand, five hundred fifty-two".