20941403280 has 320 divisors, whose sum is σ = 78388316160. Its totient is φ = 4517793792.

The previous prime is 20941403279. The next prime is 20941403291. The reversal of 20941403280 is 8230414902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9798372 + ... + 9800508.

It is an arithmetic number, because the mean of its divisors is an integer number (244963488).

Almost surely, 2^20941403280 is an apocalyptic number.

20941403280 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 20941403280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39194158080).

20941403280 is an abundant number, since it is smaller than the sum of its proper divisors (57446912880).

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

20941403280 is a wasteful number, since it uses less digits than its factorization.

20941403280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 20941403280 in words is "twenty billion, nine hundred forty-one million, four hundred three thousand, two hundred eighty".