12969961447 has 2 divisors, whose sum is σ = 12969961448. Its totient is φ = 12969961446.

The previous prime is 12969961399. The next prime is 12969961483. The reversal of 12969961447 is 74416996921.

It is a strong prime.

It is an emirp because it is prime and its reverse (74416996921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12969961447 - 2¹¹ = 12969959399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12969961391 and 12969961400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12969961747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6484980723 + 6484980724.

It is an arithmetic number, because the mean of its divisors is an integer number (6484980724).

Almost surely, 2^12969961447 is an apocalyptic number.

12969961447 is a deficient number, since it is larger than the sum of its proper divisors (1).

12969961447 is an equidigital number, since it uses as much as digits as its factorization.

12969961447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 58.

The spelling of 12969961447 in words is "twelve billion, nine hundred sixty-nine million, nine hundred sixty-one thousand, four hundred forty-seven".