20875147488 has 144 divisors (see below), whose sum is σ = 66134970720. Its totient is φ = 6201603072.

The previous prime is 20875147477. The next prime is 20875147519. The reversal of 20875147488 is 88474157802.

20875147488 is a `hidden beast` number, since 2 + 0 + 87 + 514 + 7 + 48 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12445 + ... + 204707.

It is an arithmetic number, because the mean of its divisors is an integer number (459270630).

Almost surely, 2^20875147488 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 20875147488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33067485360).

20875147488 is an abundant number, since it is smaller than the sum of its proper divisors (45259823232).

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

20875147488 is a wasteful number, since it uses less digits than its factorization.

20875147488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192321 (or 192310 counting only the distinct ones).

The product of its (nonzero) digits is 4014080, while the sum is 54.

The spelling of 20875147488 in words is "twenty billion, eight hundred seventy-five million, one hundred forty-seven thousand, four hundred eighty-eight".