12609261277919 has 2 divisors, whose sum is σ = 12609261277920. Its totient is φ = 12609261277918.

The previous prime is 12609261277909. The next prime is 12609261277937. The reversal of 12609261277919 is 91977216290621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12609261277919 is a prime.

It is a super-2 number, since 2×12609261277919² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12609261277909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6304630638959 + 6304630638960.

It is an arithmetic number, because the mean of its divisors is an integer number (6304630638960).

Almost surely, 2^{12609261277919} is an apocalyptic number.

12609261277919 is a deficient number, since it is larger than the sum of its proper divisors (1).

12609261277919 is an equidigital number, since it uses as much as digits as its factorization.

12609261277919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10287648, while the sum is 62.

The spelling of 12609261277919 in words is "twelve trillion, six hundred nine billion, two hundred sixty-one million, two hundred seventy-seven thousand, nine hundred nineteen".