22036687218737 has 4 divisors (see below), whose sum is σ = 22037958607860. Its totient is φ = 22035415829616.

The previous prime is 22036687218719. The next prime is 22036687218757. The reversal of 22036687218737 is 73781278663022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9811986143281 + 12224701075456 = 3132409^2 + 3496384^2 .

It is a cyclic number.

It is not a de Polignac number, because 22036687218737 - 2⁶ = 22036687218673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22036687218737.

It is not an unprimeable number, because it can be changed into a prime (22036687218757) 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 3 ways as a sum of consecutive naturals, for example, 635668562 + ... + 635703227.

It is an arithmetic number, because the mean of its divisors is an integer number (5509489651965).

Almost surely, 2^{22036687218737} is an apocalyptic number.

It is an amenable number.

22036687218737 is a deficient number, since it is larger than the sum of its proper divisors (1271389123).

22036687218737 is a wasteful number, since it uses less digits than its factorization.

22036687218737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271389122.

The product of its (nonzero) digits is 56899584, while the sum is 62.

The spelling of 22036687218737 in words is "twenty-two trillion, thirty-six billion, six hundred eighty-seven million, two hundred eighteen thousand, seven hundred thirty-seven".