1012001608789 has 2 divisors, whose sum is σ = 1012001608790. Its totient is φ = 1012001608788.

The previous prime is 1012001608721. The next prime is 1012001608823. The reversal of 1012001608789 is 9878061002101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956957410564 + 55044198225 = 978242^2 + 234615^2 .

It is a cyclic number.

It is not a de Polignac number, because 1012001608789 - 2¹⁷ = 1012001477717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1012001602789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506000804394 + 506000804395.

It is an arithmetic number, because the mean of its divisors is an integer number (506000804395).

Almost surely, 2^{1012001608789} is an apocalyptic number.

It is an amenable number.

1012001608789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012001608789 is an equidigital number, since it uses as much as digits as its factorization.

1012001608789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 43.

The spelling of 1012001608789 in words is "one trillion, twelve billion, one million, six hundred eight thousand, seven hundred eighty-nine".