1687593342229 has 2 divisors, whose sum is σ = 1687593342230. Its totient is φ = 1687593342228.

The previous prime is 1687593342221. The next prime is 1687593342269. The reversal of 1687593342229 is 9222433957861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1229503968900 + 458089373329 = 1108830^2 + 676823^2 .

It is a cyclic number.

It is not a de Polignac number, because 1687593342229 - 2³ = 1687593342221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1687593342221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843796671114 + 843796671115.

It is an arithmetic number, because the mean of its divisors is an integer number (843796671115).

Almost surely, 2^{1687593342229} is an apocalyptic number.

It is an amenable number.

1687593342229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1687593342229 is an equidigital number, since it uses as much as digits as its factorization.

1687593342229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39191040, while the sum is 61.

The spelling of 1687593342229 in words is "one trillion, six hundred eighty-seven billion, five hundred ninety-three million, three hundred forty-two thousand, two hundred twenty-nine".