12295026661 has 2 divisors, whose sum is σ = 12295026662. Its totient is φ = 12295026660.

The previous prime is 12295026613. The next prime is 12295026701. The reversal of 12295026661 is 16662059221.

It is an a-pointer prime, because the next prime (12295026701) can be obtained adding 12295026661 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6690258436 + 5604768225 = 81794^2 + 74865^2 .

It is an emirp because it is prime and its reverse (16662059221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12295026661 - 2¹⁷ = 12294895589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12295026361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6147513330 + 6147513331.

It is an arithmetic number, because the mean of its divisors is an integer number (6147513331).

Almost surely, 2^12295026661 is an apocalyptic number.

It is an amenable number.

12295026661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12295026661 is an equidigital number, since it uses as much as digits as its factorization.

12295026661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 12295026661 in words is "twelve billion, two hundred ninety-five million, twenty-six thousand, six hundred sixty-one".