12699589428 has 24 divisors (see below), whose sum is σ = 32924861760. Its totient is φ = 4233196440.

The previous prime is 12699589423. The next prime is 12699589429. The reversal of 12699589428 is 82498599621.

12699589428 is a `hidden beast` number, since 1 + 2 + 6 + 9 + 9 + 589 + 42 + 8 = 666.

It is a super-2 number, since 2×12699589428² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12699589423) 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, 58794288 + ... + 58794503.

It is an arithmetic number, because the mean of its divisors is an integer number (1371869240).

Almost surely, 2^12699589428 is an apocalyptic number.

12699589428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12699589428 is an abundant number, since it is smaller than the sum of its proper divisors (20225272332).

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

12699589428 is a wasteful number, since it uses less digits than its factorization.

12699589428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117588804 (or 117588796 counting only the distinct ones).

The product of its digits is 22394880, while the sum is 63.

The spelling of 12699589428 in words is "twelve billion, six hundred ninety-nine million, five hundred eighty-nine thousand, four hundred twenty-eight".