20571132048 has 80 divisors (see below), whose sum is σ = 54533134656. Its totient is φ = 6678138880.

The previous prime is 20571132031. The next prime is 20571132073. The reversal of 20571132048 is 84023117502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1158211 + ... + 1175837.

Almost surely, 2^20571132048 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 20571132048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27266567328).

20571132048 is an abundant number, since it is smaller than the sum of its proper divisors (33962002608).

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

20571132048 is a wasteful number, since it uses less digits than its factorization.

20571132048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18272 (or 18266 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The spelling of 20571132048 in words is "twenty billion, five hundred seventy-one million, one hundred thirty-two thousand, forty-eight".