12600763661 has 2 divisors, whose sum is σ = 12600763662. Its totient is φ = 12600763660.

The previous prime is 12600763627. The next prime is 12600763663. The reversal of 12600763661 is 16636700621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8615366761 + 3985396900 = 92819^2 + 63130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12600763661 is a prime.

Together with 12600763663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12600763663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6300381830 + 6300381831.

It is an arithmetic number, because the mean of its divisors is an integer number (6300381831).

Almost surely, 2^12600763661 is an apocalyptic number.

It is an amenable number.

12600763661 is a deficient number, since it is larger than the sum of its proper divisors (1).

12600763661 is an equidigital number, since it uses as much as digits as its factorization.

12600763661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The spelling of 12600763661 in words is "twelve billion, six hundred million, seven hundred sixty-three thousand, six hundred sixty-one".