126251679377 has 2 divisors, whose sum is σ = 126251679378. Its totient is φ = 126251679376.

The previous prime is 126251679371. The next prime is 126251679397. The reversal of 126251679377 is 773976152621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126251591761 + 87616 = 355319^2 + 296^2 .

It is a cyclic number.

It is not a de Polignac number, because 126251679377 - 2⁸ = 126251679121 is a prime.

It is not a weakly prime, because it can be changed into another prime (126251679371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63125839688 + 63125839689.

It is an arithmetic number, because the mean of its divisors is an integer number (63125839689).

Almost surely, 2^126251679377 is an apocalyptic number.

It is an amenable number.

126251679377 is a deficient number, since it is larger than the sum of its proper divisors (1).

126251679377 is an equidigital number, since it uses as much as digits as its factorization.

126251679377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6667920, while the sum is 56.

The spelling of 126251679377 in words is "one hundred twenty-six billion, two hundred fifty-one million, six hundred seventy-nine thousand, three hundred seventy-seven".