2136802437665 has 16 divisors (see below), whose sum is σ = 2931796228608. Its totient is φ = 1464573800256.

The previous prime is 2136802437661. The next prime is 2136802437673. The reversal of 2136802437665 is 5667342086312.

It is not a de Polignac number, because 2136802437665 - 2² = 2136802437661 is a prime.

It is a super-2 number, since 2×2136802437665² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136802437661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13716377 + ... + 13871286.

It is an arithmetic number, because the mean of its divisors is an integer number (183237264288).

Almost surely, 2^{2136802437665} is an apocalyptic number.

It is an amenable number.

2136802437665 is a deficient number, since it is larger than the sum of its proper divisors (794993790943).

2136802437665 is a wasteful number, since it uses less digits than its factorization.

2136802437665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27589888.

The product of its (nonzero) digits is 8709120, while the sum is 53.

The spelling of 2136802437665 in words is "two trillion, one hundred thirty-six billion, eight hundred two million, four hundred thirty-seven thousand, six hundred sixty-five".