20936674066850 has 24 divisors (see below), whose sum is σ = 38943873276708. Its totient is φ = 8374312742400.

The previous prime is 20936674066823. The next prime is 20936674066961. The reversal of 20936674066850 is 5866047663902.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 17682268890841 + 3254405176009 = 4205029^2 + 1803997^2 .

It is a super-3 number, since 3×20936674066850³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7735511 + ... + 10085210.

Almost surely, 2^{20936674066850} is an apocalyptic number.

20936674066850 is a deficient number, since it is larger than the sum of its proper divisors (18007199209858).

20936674066850 is a wasteful number, since it uses less digits than its factorization.

20936674066850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17844230 (or 17844225 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 62.

The spelling of 20936674066850 in words is "twenty trillion, nine hundred thirty-six billion, six hundred seventy-four million, sixty-six thousand, eight hundred fifty".