2116261026636 has 12 divisors (see below), whose sum is σ = 4937942395512. Its totient is φ = 705420342208.

The previous prime is 2116261026629. The next prime is 2116261026637. The reversal of 2116261026636 is 6366201626112.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2116261026637) 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, 88177542765 + ... + 88177542788.

It is an arithmetic number, because the mean of its divisors is an integer number (411495199626).

Almost surely, 2^{2116261026636} is an apocalyptic number.

It is an amenable number.

2116261026636 is an abundant number, since it is smaller than the sum of its proper divisors (2821681368876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2116261026636 is a wasteful number, since it uses less digits than its factorization.

2116261026636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176355085560 (or 176355085558 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 2116261026636 in words is "two trillion, one hundred sixteen billion, two hundred sixty-one million, twenty-six thousand, six hundred thirty-six".