12405426736 has 20 divisors (see below), whose sum is σ = 24810854464. Its totient is φ = 6002625600.

The previous prime is 12405426731. The next prime is 12405426757. The reversal of 12405426736 is 63762450421.

12405426736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

12405426736 is an admirable number.

It is a super-2 number, since 2×12405426736² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12405426731) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 12504975 + ... + 12505966.

Almost surely, 2^12405426736 is an apocalyptic number.

12405426736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12405426736 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12405426736 is a wasteful number, since it uses less digits than its factorization.

12405426736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25010980 (or 25010974 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 12405426736 in words is "twelve billion, four hundred five million, four hundred twenty-six thousand, seven hundred thirty-six".