20869843846896 has 480 divisors, whose sum is σ = 66761898840000. Its totient is φ = 6027872256000.

The previous prime is 20869843846847. The next prime is 20869843846903. The reversal of 20869843846896 is 69864834896802.

20869843846896 is a `hidden beast` number, since 2 + 0 + 8 + 6 + 98 + 4 + 384 + 68 + 96 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1619191620 + ... + 1619204508.

It is an arithmetic number, because the mean of its divisors is an integer number (139087289250).

Almost surely, 2^{20869843846896} 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 20869843846896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33380949420000).

20869843846896 is an abundant number, since it is smaller than the sum of its proper divisors (45892054993104).

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

20869843846896 is a wasteful number, since it uses less digits than its factorization.

20869843846896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13393 (or 13384 counting only the distinct ones).

The product of its (nonzero) digits is 6879707136, while the sum is 81.

The spelling of 20869843846896 in words is "twenty trillion, eight hundred sixty-nine billion, eight hundred forty-three million, eight hundred forty-six thousand, eight hundred ninety-six".