12698989056 has 160 divisors (see below), whose sum is σ = 40481992320. Its totient is φ = 3907325952.

The previous prime is 12698989027. The next prime is 12698989073. The reversal of 12698989056 is 65098989621.

It is a super-2 number, since 2×12698989056² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12698988984 and 12698989002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144381 + ... + 215043.

It is an arithmetic number, because the mean of its divisors is an integer number (253012452).

Almost surely, 2^12698989056 is an apocalyptic number.

12698989056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12698989056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20240996160).

12698989056 is an abundant number, since it is smaller than the sum of its proper divisors (27783003264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12698989056 is an equidigital number, since it uses as much as digits as its factorization.

12698989056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70703 (or 70681 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 12698989056 in words is "twelve billion, six hundred ninety-eight million, nine hundred eighty-nine thousand, fifty-six".