126365605033901 has 2 divisors, whose sum is σ = 126365605033902. Its totient is φ = 126365605033900.

The previous prime is 126365605033897. The next prime is 126365605033907. The reversal of 126365605033901 is 109330506563621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111477382141225 + 14888222892676 = 10558285^2 + 3858526^2 .

It is a cyclic number.

It is not a de Polignac number, because 126365605033901 - 2² = 126365605033897 is a prime.

It is a super-2 number, since 2×126365605033901² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126365605033901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126365605033907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63182802516950 + 63182802516951.

It is an arithmetic number, because the mean of its divisors is an integer number (63182802516951).

Almost surely, 2^{126365605033901} is an apocalyptic number.

It is an amenable number.

126365605033901 is a deficient number, since it is larger than the sum of its proper divisors (1).

126365605033901 is an equidigital number, since it uses as much as digits as its factorization.

126365605033901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2624400, while the sum is 50.

The spelling of 126365605033901 in words is "one hundred twenty-six trillion, three hundred sixty-five billion, six hundred five million, thirty-three thousand, nine hundred one".