12321545407 has 2 divisors, whose sum is σ = 12321545408. Its totient is φ = 12321545406.

The previous prime is 12321545393. The next prime is 12321545437. The reversal of 12321545407 is 70454512321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12321545407 - 2¹⁵ = 12321512639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321545437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160772703 + 6160772704.

It is an arithmetic number, because the mean of its divisors is an integer number (6160772704).

Almost surely, 2^12321545407 is an apocalyptic number.

12321545407 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321545407 is an equidigital number, since it uses as much as digits as its factorization.

12321545407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 33600, while the sum is 34.

The spelling of 12321545407 in words is "twelve billion, three hundred twenty-one million, five hundred forty-five thousand, four hundred seven".