126664663253 has 2 divisors, whose sum is σ = 126664663254. Its totient is φ = 126664663252.

The previous prime is 126664663201. The next prime is 126664663267. The reversal of 126664663253 is 352366466621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79207347844 + 47457315409 = 281438^2 + 217847^2 .

It is a cyclic number.

It is not a de Polignac number, because 126664663253 - 2⁸ = 126664662997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126664663283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63332331626 + 63332331627.

It is an arithmetic number, because the mean of its divisors is an integer number (63332331627).

Almost surely, 2^126664663253 is an apocalyptic number.

It is an amenable number.

126664663253 is a deficient number, since it is larger than the sum of its proper divisors (1).

126664663253 is an equidigital number, since it uses as much as digits as its factorization.

126664663253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 50.

The spelling of 126664663253 in words is "one hundred twenty-six billion, six hundred sixty-four million, six hundred sixty-three thousand, two hundred fifty-three".