2187797052285 has 64 divisors (see below), whose sum is σ = 4333037587200. Its totient is φ = 1039928972544.

The previous prime is 2187797052283. The next prime is 2187797052317. The reversal of 2187797052285 is 5822507977812.

2187797052285 is a `hidden beast` number, since 2 + 18 + 7 + 7 + 97 + 0 + 522 + 8 + 5 = 666.

It is not a de Polignac number, because 2187797052285 - 2¹ = 2187797052283 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2187797052283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 21442347 + ... + 21544136.

It is an arithmetic number, because the mean of its divisors is an integer number (67703712300).

Almost surely, 2^{2187797052285} is an apocalyptic number.

It is an amenable number.

2187797052285 is a deficient number, since it is larger than the sum of its proper divisors (2145240534915).

2187797052285 is a wasteful number, since it uses less digits than its factorization.

2187797052285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42986539 (or 42986533 counting only the distinct ones).

The product of its (nonzero) digits is 39513600, while the sum is 63.

The spelling of 2187797052285 in words is "two trillion, one hundred eighty-seven billion, seven hundred ninety-seven million, fifty-two thousand, two hundred eighty-five".