1009989777701 has 2 divisors, whose sum is σ = 1009989777702. Its totient is φ = 1009989777700.

The previous prime is 1009989777659. The next prime is 1009989777757. The reversal of 1009989777701 is 1077779899001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 963536596801 + 46453180900 = 981599^2 + 215530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009989777701 - 2²⁶ = 1009922668837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1009989777761) 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, 504994888850 + 504994888851.

It is an arithmetic number, because the mean of its divisors is an integer number (504994888851).

Almost surely, 2^{1009989777701} is an apocalyptic number.

It is an amenable number.

1009989777701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009989777701 is an equidigital number, since it uses as much as digits as its factorization.

1009989777701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14002632, while the sum is 65.

The spelling of 1009989777701 in words is "one trillion, nine billion, nine hundred eighty-nine million, seven hundred seventy-seven thousand, seven hundred one".