1712646634409 has 2 divisors, whose sum is σ = 1712646634410. Its totient is φ = 1712646634408.

The previous prime is 1712646634357. The next prime is 1712646634423. The reversal of 1712646634409 is 9044366462171.

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., 1712572674409 + 73960000 = 1308653^2 + 8600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1712646634409 - 2¹² = 1712646630313 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1712646634429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 856323317204 + 856323317205.

It is an arithmetic number, because the mean of its divisors is an integer number (856323317205).

Almost surely, 2^{1712646634409} is an apocalyptic number.

It is an amenable number.

1712646634409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1712646634409 is an equidigital number, since it uses as much as digits as its factorization.

1712646634409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 1712646634409 in words is "one trillion, seven hundred twelve billion, six hundred forty-six million, six hundred thirty-four thousand, four hundred nine".