12820538089 has 8 divisors (see below), whose sum is σ = 13031165952. Its totient is φ = 12610745280.

The previous prime is 12820538053. The next prime is 12820538111. The reversal of 12820538089 is 98083502821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12820538089 - 2⁹ = 12820537577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12820538789) 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 7 ways as a sum of consecutive naturals, for example, 177769 + ... + 239254.

It is an arithmetic number, because the mean of its divisors is an integer number (1628895744).

Almost surely, 2^12820538089 is an apocalyptic number.

It is an amenable number.

12820538089 is a deficient number, since it is larger than the sum of its proper divisors (210627863).

12820538089 is an equidigital number, since it uses as much as digits as its factorization.

12820538089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417527.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 12820538089 in words is "twelve billion, eight hundred twenty million, five hundred thirty-eight thousand, eighty-nine".