20911603886080 has 192 divisors, whose sum is σ = 55436986725120. Its totient is φ = 7530315251712.

The previous prime is 20911603886077. The next prime is 20911603886099. The reversal of 20911603886080 is 8068830611902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392397 + ... + 6615283.

It is an arithmetic number, because the mean of its divisors is an integer number (288734305860).

Almost surely, 2^{20911603886080} is an apocalyptic number.

20911603886080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20911603886080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27718493362560).

20911603886080 is an abundant number, since it is smaller than the sum of its proper divisors (34525382839040).

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

20911603886080 is a wasteful number, since it uses less digits than its factorization.

20911603886080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5222954 (or 5222934 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 52.

The spelling of 20911603886080 in words is "twenty trillion, nine hundred eleven billion, six hundred three million, eight hundred eighty-six thousand, eighty".