20776322896896 has 1408 divisors, whose sum is σ = 70555668480000. Its totient is φ = 5303107584000.

The previous prime is 20776322896843. The next prime is 20776322896921. The reversal of 20776322896896 is 69869822367702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 139438408630 + ... + 139438408778.

It is an arithmetic number, because the mean of its divisors is an integer number (50110560000).

Almost surely, 2^{20776322896896} 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 20776322896896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35277834240000).

20776322896896 is an abundant number, since it is smaller than the sum of its proper divisors (49779345583104).

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

20776322896896 is a wasteful number, since it uses less digits than its factorization.

20776322896896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 1316818944, while the sum is 75.

The spelling of 20776322896896 in words is "twenty trillion, seven hundred seventy-six billion, three hundred twenty-two million, eight hundred ninety-six thousand, eight hundred ninety-six".