126912679877 has 2 divisors, whose sum is σ = 126912679878. Its totient is φ = 126912679876.

The previous prime is 126912679867. The next prime is 126912679969. The reversal of 126912679877 is 778976219621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95821821601 + 31090858276 = 309551^2 + 176326^2 .

It is a cyclic number.

It is not a de Polignac number, because 126912679877 - 2¹⁰ = 126912678853 is a prime.

It is a super-2 number, since 2×126912679877² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126912679867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63456339938 + 63456339939.

It is an arithmetic number, because the mean of its divisors is an integer number (63456339939).

Almost surely, 2^126912679877 is an apocalyptic number.

It is an amenable number.

126912679877 is a deficient number, since it is larger than the sum of its proper divisors (1).

126912679877 is an equidigital number, since it uses as much as digits as its factorization.

126912679877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32006016, while the sum is 65.

The spelling of 126912679877 in words is "one hundred twenty-six billion, nine hundred twelve million, six hundred seventy-nine thousand, eight hundred seventy-seven".