126799977301 has 2 divisors, whose sum is σ = 126799977302. Its totient is φ = 126799977300.

The previous prime is 126799977287. The next prime is 126799977307. The reversal of 126799977301 is 103779997621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114261576676 + 12538400625 = 338026^2 + 111975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126799977301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126799977301.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126799977307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63399988650 + 63399988651.

It is an arithmetic number, because the mean of its divisors is an integer number (63399988651).

Almost surely, 2^126799977301 is an apocalyptic number.

It is an amenable number.

126799977301 is a deficient number, since it is larger than the sum of its proper divisors (1).

126799977301 is an equidigital number, since it uses as much as digits as its factorization.

126799977301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9001692, while the sum is 61.

The spelling of 126799977301 in words is "one hundred twenty-six billion, seven hundred ninety-nine million, nine hundred seventy-seven thousand, three hundred one".