20000863481856 has 832 divisors, whose sum is σ = 58480248668160. Its totient is φ = 6065608458240.

The previous prime is 20000863481791. The next prime is 20000863481867. The reversal of 20000863481856 is 65818436800002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20000863481799 and 20000863481808.

It is a congruent number.

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, 72205283190 + ... + 72205283466.

Almost surely, 2^{20000863481856} 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 20000863481856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29240124334080).

20000863481856 is an abundant number, since it is smaller than the sum of its proper divisors (38479385186304).

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

20000863481856 is a wasteful number, since it uses less digits than its factorization.

20000863481856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 51.

The spelling of 20000863481856 in words is "twenty trillion, eight hundred sixty-three million, four hundred eighty-one thousand, eight hundred fifty-six".