20205950343936 has 576 divisors, whose sum is σ = 64452788370432. Its totient is φ = 5499919466496.

The previous prime is 20205950343827. The next prime is 20205950344033. The reversal of 20205950343936 is 63934305950202.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2119574626 + ... + 2119584158.

It is an arithmetic number, because the mean of its divisors is an integer number (111897202032).

Almost surely, 2^{20205950343936} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20205950343936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32226394185216).

20205950343936 is an abundant number, since it is smaller than the sum of its proper divisors (44246838026496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20205950343936 is a wasteful number, since it uses less digits than its factorization.

20205950343936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9828 (or 9814 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 51.

The spelling of 20205950343936 in words is "twenty trillion, two hundred five billion, nine hundred fifty million, three hundred forty-three thousand, nine hundred thirty-six".