126648439157 has 2 divisors, whose sum is σ = 126648439158. Its totient is φ = 126648439156.

The previous prime is 126648439087. The next prime is 126648439163. The reversal of 126648439157 is 751934846621.

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., 123728766001 + 2919673156 = 351751^2 + 54034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126648439157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126648439187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63324219578 + 63324219579.

It is an arithmetic number, because the mean of its divisors is an integer number (63324219579).

Almost surely, 2^126648439157 is an apocalyptic number.

It is an amenable number.

126648439157 is a deficient number, since it is larger than the sum of its proper divisors (1).

126648439157 is an equidigital number, since it uses as much as digits as its factorization.

126648439157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 56.

The spelling of 126648439157 in words is "one hundred twenty-six billion, six hundred forty-eight million, four hundred thirty-nine thousand, one hundred fifty-seven".