10126781773 has 2 divisors, whose sum is σ = 10126781774. Its totient is φ = 10126781772.

The previous prime is 10126781767. The next prime is 10126781807. The reversal of 10126781773 is 37718762101.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10108693764 + 18088009 = 100542^2 + 4253^2 .

It is a cyclic number.

It is not a de Polignac number, because 10126781773 - 2⁵ = 10126781741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10126781713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5063390886 + 5063390887.

It is an arithmetic number, because the mean of its divisors is an integer number (5063390887).

Almost surely, 2^10126781773 is an apocalyptic number.

It is an amenable number.

10126781773 is a deficient number, since it is larger than the sum of its proper divisors (1).

10126781773 is an equidigital number, since it uses as much as digits as its factorization.

10126781773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 43.

The spelling of 10126781773 in words is "ten billion, one hundred twenty-six million, seven hundred eighty-one thousand, seven hundred seventy-three".