12699589440 has 112 divisors (see below), whose sum is σ = 40346546688. Its totient is φ = 3384428544.

The previous prime is 12699589429. The next prime is 12699589471. The reversal of 12699589440 is 4498599621.

12699589440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12699589440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2054194 + ... + 2060366.

It is an arithmetic number, because the mean of its divisors is an integer number (360237024).

Almost surely, 2^12699589440 is an apocalyptic number.

12699589440 is a gapful number since it is divisible by the number (10) 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 12699589440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20173273344).

12699589440 is an abundant number, since it is smaller than the sum of its proper divisors (27646957248).

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

12699589440 is a wasteful number, since it uses less digits than its factorization.

12699589440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8336 (or 8326 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 12699589440 in words is "twelve billion, six hundred ninety-nine million, five hundred eighty-nine thousand, four hundred forty".