12461563420 has 24 divisors (see below), whose sum is σ = 26228374704. Its totient is φ = 4973369856.

The previous prime is 12461563417. The next prime is 12461563423. The reversal of 12461563420 is 2436516421.

12461563420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12461563417) and next prime (12461563423).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12461563423) 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 7 ways as a sum of consecutive naturals, for example, 694389 + ... + 712108.

It is an arithmetic number, because the mean of its divisors is an integer number (1092848946).

Almost surely, 2^12461563420 is an apocalyptic number.

12461563420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12461563420 is an abundant number, since it is smaller than the sum of its proper divisors (13766811284).

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

12461563420 is a wasteful number, since it uses less digits than its factorization.

12461563420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406949 (or 1406947 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 12461563420 in words is "twelve billion, four hundred sixty-one million, five hundred sixty-three thousand, four hundred twenty".