2636989031338 has 16 divisors (see below), whose sum is σ = 3996833625000. Its totient is φ = 1304776948672.

The previous prime is 2636989031333. The next prime is 2636989031359. The reversal of 2636989031338 is 8331309896362.

It can be written as a sum of positive squares in 4 ways, for example, as 347266239849 + 2289722791489 = 589293^2 + 1513183^2 .

It is a super-2 number, since 2×2636989031338² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2636989031333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16367713 + ... + 16528036.

Almost surely, 2^{2636989031338} is an apocalyptic number.

2636989031338 is a deficient number, since it is larger than the sum of its proper divisors (1359844593662).

2636989031338 is a wasteful number, since it uses less digits than its factorization.

2636989031338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32896169.

The product of its (nonzero) digits is 30233088, while the sum is 61.

The spelling of 2636989031338 in words is "two trillion, six hundred thirty-six billion, nine hundred eighty-nine million, thirty-one thousand, three hundred thirty-eight".