12988061789 has 4 divisors (see below), whose sum is σ = 13339090524. Its totient is φ = 12637033056.

The previous prime is 12988061767. The next prime is 12988061833. The reversal of 12988061789 is 98716088921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11121389764 + 1866672025 = 105458^2 + 43205^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12988061789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12988061759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175514312 + ... + 175514385.

It is an arithmetic number, because the mean of its divisors is an integer number (3334772631).

Almost surely, 2^12988061789 is an apocalyptic number.

It is an amenable number.

12988061789 is a deficient number, since it is larger than the sum of its proper divisors (351028735).

12988061789 is an equidigital number, since it uses as much as digits as its factorization.

12988061789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351028734.

The product of its (nonzero) digits is 3483648, while the sum is 59.

The spelling of 12988061789 in words is "twelve billion, nine hundred eighty-eight million, sixty-one thousand, seven hundred eighty-nine".