20971924050 has 288 divisors, whose sum is σ = 67418542080. Its totient is φ = 4264310400.

The previous prime is 20971924037. The next prime is 20971924079. The reversal of 20971924050 is 5042917902.

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 143 ways as a sum of consecutive naturals, for example, 3797191 + ... + 3802709.

It is an arithmetic number, because the mean of its divisors is an integer number (234092160).

Almost surely, 2^20971924050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20971924050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33709271040).

20971924050 is an abundant number, since it is smaller than the sum of its proper divisors (46446618030).

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

20971924050 is a wasteful number, since it uses less digits than its factorization.

20971924050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5606 (or 5594 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 20971924050 in words is "twenty billion, nine hundred seventy-one million, nine hundred twenty-four thousand, fifty".