20548828587 has 16 divisors (see below), whose sum is σ = 31401216000. Its totient is φ = 11708919552.

The previous prime is 20548828583. The next prime is 20548828603. The reversal of 20548828587 is 78582884502.

It is a happy number.

It is not a de Polignac number, because 20548828587 - 2² = 20548828583 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20548828583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378587 + ... + 1393412.

It is an arithmetic number, because the mean of its divisors is an integer number (1962576000).

Almost surely, 2^20548828587 is an apocalyptic number.

20548828587 is a deficient number, since it is larger than the sum of its proper divisors (10852387413).

20548828587 is a wasteful number, since it uses less digits than its factorization.

20548828587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772362.

The product of its (nonzero) digits is 11468800, while the sum is 57.

The spelling of 20548828587 in words is "twenty billion, five hundred forty-eight million, eight hundred twenty-eight thousand, five hundred eighty-seven".