21528482512 has 40 divisors (see below), whose sum is σ = 42707767520. Its totient is φ = 10507432320.

The previous prime is 21528482509. The next prime is 21528482531.

21528482512 is nontrivially palindromic in base 10.

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, 1222087 + ... + 1239577.

It is an arithmetic number, because the mean of its divisors is an integer number (1067694188).

Almost surely, 2^21528482512 is an apocalyptic number.

It is an amenable number.

21528482512 is a deficient number, since it is larger than the sum of its proper divisors (21179285008).

21528482512 is a wasteful number, since it uses less digits than its factorization.

21528482512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19331 (or 19325 counting only the distinct ones).

The product of its digits is 102400, while the sum is 40.

The spelling of 21528482512 in words is "twenty-one billion, five hundred twenty-eight million, four hundred eighty-two thousand, five hundred twelve".