12364508421 has 12 divisors (see below), whose sum is σ = 17861821900. Its totient is φ = 8242093440.

The previous prime is 12364508417. The next prime is 12364508447. The reversal of 12364508421 is 12480546321.

It is a happy number.

12364508421 is a `hidden beast` number, since 1 + 2 + 3 + 645 + 0 + 8 + 4 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 3586692321 + 8777816100 = 59889^2 + 93690^2 .

It is not a de Polignac number, because 12364508421 - 2² = 12364508417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12364508461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15651 + ... + 158031.

Almost surely, 2^12364508421 is an apocalyptic number.

It is an amenable number.

12364508421 is a deficient number, since it is larger than the sum of its proper divisors (5497313479).

12364508421 is a wasteful number, since it uses less digits than its factorization.

12364508421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152036 (or 152033 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 12364508421 in words is "twelve billion, three hundred sixty-four million, five hundred eight thousand, four hundred twenty-one".