20736549118436 has 12 divisors (see below), whose sum is σ = 36298830159228. Its totient is φ = 10365454787232.

The previous prime is 20736549118421. The next prime is 20736549118457. The reversal of 20736549118436 is 63481194563702.

It can be written as a sum of positive squares in 2 ways, for example, as 18367738777600 + 2368810340836 = 4285760^2 + 1539094^2 .

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, 704926451 + ... + 704955866.

It is an arithmetic number, because the mean of its divisors is an integer number (3024902513269).

It is a 1-persistent number, because it is pandigital, but 2⋅20736549118436 = 41473098236872 is not.

Almost surely, 2^{20736549118436} is an apocalyptic number.

It is an amenable number.

20736549118436 is a deficient number, since it is larger than the sum of its proper divisors (15562281040792).

20736549118436 is a wasteful number, since it uses less digits than its factorization.

20736549118436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409885998 (or 1409885996 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 20736549118436 in words is "twenty trillion, seven hundred thirty-six billion, five hundred forty-nine million, one hundred eighteen thousand, four hundred thirty-six".