12528009136 has 40 divisors (see below), whose sum is σ = 24394889024. Its totient is φ = 6232619520.

The previous prime is 12528009103. The next prime is 12528009149. The reversal of 12528009136 is 63190082521.

It is a junction number, because it is equal to n+sod(n) for n = 12528009095 and 12528009104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4477690 + ... + 4480486.

Almost surely, 2^12528009136 is an apocalyptic number.

12528009136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12528009136 is a deficient number, since it is larger than the sum of its proper divisors (11866879888).

12528009136 is a wasteful number, since it uses less digits than its factorization.

12528009136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109 (or 4103 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 12528009136 in words is "twelve billion, five hundred twenty-eight million, nine thousand, one hundred thirty-six".