12434434012 has 96 divisors (see below), whose sum is σ = 29896441344. Its totient is φ = 4367865600.

The previous prime is 12434434003. The next prime is 12434434057. The reversal of 12434434012 is 21043443421.

It is a super-2 number, since 2×12434434012² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 136062 + ... + 208282.

It is an arithmetic number, because the mean of its divisors is an integer number (311421264).

Almost surely, 2^12434434012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12434434012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14948220672).

12434434012 is an abundant number, since it is smaller than the sum of its proper divisors (17462007332).

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

12434434012 is a wasteful number, since it uses less digits than its factorization.

12434434012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72299 (or 72297 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 12434434012 its reverse (21043443421), we get a palindrome (33477877433).

The spelling of 12434434012 in words is "twelve billion, four hundred thirty-four million, four hundred thirty-four thousand, twelve".