12667358009 has 2 divisors, whose sum is σ = 12667358010. Its totient is φ = 12667358008.

The previous prime is 12667357973. The next prime is 12667358023. The reversal of 12667358009 is 90085376621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12419988025 + 247369984 = 111445^2 + 15728^2 .

It is a cyclic number.

It is not a de Polignac number, because 12667358009 - 2¹² = 12667353913 is a prime.

It is not a weakly prime, because it can be changed into another prime (12667358059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6333679004 + 6333679005.

It is an arithmetic number, because the mean of its divisors is an integer number (6333679005).

Almost surely, 2^12667358009 is an apocalyptic number.

It is an amenable number.

12667358009 is a deficient number, since it is larger than the sum of its proper divisors (1).

12667358009 is an equidigital number, since it uses as much as digits as its factorization.

12667358009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 12667358009 in words is "twelve billion, six hundred sixty-seven million, three hundred fifty-eight thousand, nine".