20850741837556 has 12 divisors (see below), whose sum is σ = 36515608510500. Its totient is φ = 10417710834560.

The previous prime is 20850741837547. The next prime is 20850741837577. The reversal of 20850741837556 is 65573814705802.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6693086410000 + 14157655427556 = 2587100^2 + 3762666^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20850741837494 and 20850741837503.

It is a congruent number.

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, 1915014931 + ... + 1915025818.

It is an arithmetic number, because the mean of its divisors is an integer number (3042967375875).

Almost surely, 2^{20850741837556} is an apocalyptic number.

It is an amenable number.

20850741837556 is a deficient number, since it is larger than the sum of its proper divisors (15664866672944).

20850741837556 is a wasteful number, since it uses less digits than its factorization.

20850741837556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830042114 (or 3830042112 counting only the distinct ones).

The product of its (nonzero) digits is 56448000, while the sum is 61.

The spelling of 20850741837556 in words is "twenty trillion, eight hundred fifty billion, seven hundred forty-one million, eight hundred thirty-seven thousand, five hundred fifty-six".