12275738729 has 2 divisors, whose sum is σ = 12275738730. Its totient is φ = 12275738728.

The previous prime is 12275738707. The next prime is 12275738737. The reversal of 12275738729 is 92783757221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9889904704 + 2385834025 = 99448^2 + 48845^2 .

It is an emirp because it is prime and its reverse (92783757221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12275738729 - 2¹² = 12275734633 is a prime.

It is a super-2 number, since 2×12275738729² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12275738749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6137869364 + 6137869365.

It is an arithmetic number, because the mean of its divisors is an integer number (6137869365).

Almost surely, 2^12275738729 is an apocalyptic number.

It is an amenable number.

12275738729 is a deficient number, since it is larger than the sum of its proper divisors (1).

12275738729 is an equidigital number, since it uses as much as digits as its factorization.

12275738729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2963520, while the sum is 53.

The spelling of 12275738729 in words is "twelve billion, two hundred seventy-five million, seven hundred thirty-eight thousand, seven hundred twenty-nine".