20941797800 has 96 divisors (see below), whose sum is σ = 60704061120. Its totient is φ = 6527308800.

The previous prime is 20941797797. The next prime is 20941797809. The reversal of 20941797800 is 879714902.

It is not an unprimeable number, because it can be changed into a prime (20941797809) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 664529 + ... + 695328.

It is an arithmetic number, because the mean of its divisors is an integer number (632333970).

Almost surely, 2^20941797800 is an apocalyptic number.

20941797800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20941797800 is an abundant number, since it is smaller than the sum of its proper divisors (39762263320).

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

20941797800 is a wasteful number, since it uses less digits than its factorization.

20941797800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359891 (or 1359882 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 20941797800 in words is "twenty billion, nine hundred forty-one million, seven hundred ninety-seven thousand, eight hundred".