1012438342109 has 2 divisors, whose sum is σ = 1012438342110. Its totient is φ = 1012438342108.

The previous prime is 1012438342103. The next prime is 1012438342117. The reversal of 1012438342109 is 9012438342101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1004795736025 + 7642606084 = 1002395^2 + 87422^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012438342109 - 2⁸ = 1012438341853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012438342103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506219171054 + 506219171055.

It is an arithmetic number, because the mean of its divisors is an integer number (506219171055).

Almost surely, 2^{1012438342109} is an apocalyptic number.

It is an amenable number.

1012438342109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012438342109 is an equidigital number, since it uses as much as digits as its factorization.

1012438342109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 1012438342109 in words is "one trillion, twelve billion, four hundred thirty-eight million, three hundred forty-two thousand, one hundred nine".