12439036512 has 360 divisors, whose sum is σ = 43722234864. Its totient is φ = 3456649728.

The previous prime is 12439036507. The next prime is 12439036537. The reversal of 12439036512 is 21563093421.

12439036512 is a `hidden beast` number, since 1 + 24 + 3 + 90 + 36 + 512 = 666.

It is a super-2 number, since 2×12439036512² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4697973 + ... + 4700619.

Almost surely, 2^12439036512 is an apocalyptic number.

12439036512 is a gapful number since it is divisible by the number (12) 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 12439036512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21861117432).

12439036512 is an abundant number, since it is smaller than the sum of its proper divisors (31283198352).

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

12439036512 is a wasteful number, since it uses less digits than its factorization.

12439036512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720 (or 2696 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 12439036512 in words is "twelve billion, four hundred thirty-nine million, thirty-six thousand, five hundred twelve".