2102884138655 has 32 divisors (see below), whose sum is σ = 2582763840000. Its totient is φ = 1643145720192.

The previous prime is 2102884138631. The next prime is 2102884138661. The reversal of 2102884138655 is 5568314882012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2102884138655 - 2¹⁰ = 2102884137631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2102884138597 and 2102884138606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 276436862 + ... + 276444468.

It is an arithmetic number, because the mean of its divisors is an integer number (80711370000).

Almost surely, 2^{2102884138655} is an apocalyptic number.

2102884138655 is a deficient number, since it is larger than the sum of its proper divisors (479879701345).

2102884138655 is a wasteful number, since it uses less digits than its factorization.

2102884138655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13583.

The product of its (nonzero) digits is 3686400, while the sum is 53.

The spelling of 2102884138655 in words is "two trillion, one hundred two billion, eight hundred eighty-four million, one hundred thirty-eight thousand, six hundred fifty-five".