2110988156865 has 64 divisors (see below), whose sum is σ = 4084529725440. Its totient is φ = 909445743360.

The previous prime is 2110988156839. The next prime is 2110988156909. The reversal of 2110988156865 is 5686518890112.

It is not a de Polignac number, because 2110988156865 - 2⁷ = 2110988156737 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2110988156799 and 2110988156808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2388954 + ... + 3151043.

It is an arithmetic number, because the mean of its divisors is an integer number (63820776960).

Almost surely, 2^{2110988156865} is an apocalyptic number.

It is an amenable number.

2110988156865 is a deficient number, since it is larger than the sum of its proper divisors (1973541568575).

2110988156865 is a wasteful number, since it uses less digits than its factorization.

2110988156865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540222.

The product of its (nonzero) digits is 8294400, while the sum is 60.

The spelling of 2110988156865 in words is "two trillion, one hundred ten billion, nine hundred eighty-eight million, one hundred fifty-six thousand, eight hundred sixty-five".