20941847552 has 88 divisors (see below), whose sum is σ = 42600460896. Its totient is φ = 10287710208.

The previous prime is 20941847501. The next prime is 20941847567. The reversal of 20941847552 is 25574814902.

It is a junction number, because it is equal to n+sod(n) for n = 20941847497 and 20941847506.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 32367293 + ... + 32367939.

Almost surely, 2^20941847552 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 20941847552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21300230448).

20941847552 is an abundant number, since it is smaller than the sum of its proper divisors (21658613344).

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

20941847552 is an equidigital number, since it uses as much as digits as its factorization.

20941847552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 20941847552 in words is "twenty billion, nine hundred forty-one million, eight hundred forty-seven thousand, five hundred fifty-two".