2116506021636 has 12 divisors (see below), whose sum is σ = 4938514050512. Its totient is φ = 705502007208.

The previous prime is 2116506021601. The next prime is 2116506021683. The reversal of 2116506021636 is 6361206056112.

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

It is a junction number, because it is equal to n+sod(n) for n = 2116506021594 and 2116506021603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88187750890 + ... + 88187750913.

Almost surely, 2^{2116506021636} is an apocalyptic number.

It is an amenable number.

2116506021636 is an abundant number, since it is smaller than the sum of its proper divisors (2822008028876).

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

2116506021636 is a wasteful number, since it uses less digits than its factorization.

2116506021636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176375501810 (or 176375501808 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 2116506021636 in words is "two trillion, one hundred sixteen billion, five hundred six million, twenty-one thousand, six hundred thirty-six".