126866376029 has 2 divisors, whose sum is σ = 126866376030. Its totient is φ = 126866376028.

The previous prime is 126866375959. The next prime is 126866376083. The reversal of 126866376029 is 920673668621.

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., 94467096025 + 32399280004 = 307355^2 + 179998^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126866376029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126866376229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63433188014 + 63433188015.

It is an arithmetic number, because the mean of its divisors is an integer number (63433188015).

Almost surely, 2^126866376029 is an apocalyptic number.

It is an amenable number.

126866376029 is a deficient number, since it is larger than the sum of its proper divisors (1).

126866376029 is an equidigital number, since it uses as much as digits as its factorization.

126866376029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 126866376029 in words is "one hundred twenty-six billion, eight hundred sixty-six million, three hundred seventy-six thousand, twenty-nine".