10187786434409 has 2 divisors, whose sum is σ = 10187786434410. Its totient is φ = 10187786434408.

The previous prime is 10187786434403. The next prime is 10187786434481. The reversal of 10187786434409 is 90443468778101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9963871033600 + 223915400809 = 3156560^2 + 473197^2 .

It is a cyclic number.

It is not a de Polignac number, because 10187786434409 - 2²⁴ = 10187769657193 is a prime.

It is not a weakly prime, because it can be changed into another prime (10187786434403) 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, 5093893217204 + 5093893217205.

It is an arithmetic number, because the mean of its divisors is an integer number (5093893217205).

Almost surely, 2^{10187786434409} is an apocalyptic number.

It is an amenable number.

10187786434409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10187786434409 is an equidigital number, since it uses as much as digits as its factorization.

10187786434409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 10187786434409 in words is "ten trillion, one hundred eighty-seven billion, seven hundred eighty-six million, four hundred thirty-four thousand, four hundred nine".