1667870842259 has 2 divisors, whose sum is σ = 1667870842260. Its totient is φ = 1667870842258.

The previous prime is 1667870842219. The next prime is 1667870842273. The reversal of 1667870842259 is 9522480787661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1667870842259 - 2²⁰ = 1667869793683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1667870842195 and 1667870842204.

It is not a weakly prime, because it can be changed into another prime (1667870842219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 833935421129 + 833935421130.

It is an arithmetic number, because the mean of its divisors is an integer number (833935421130).

Almost surely, 2^{1667870842259} is an apocalyptic number.

1667870842259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1667870842259 is an equidigital number, since it uses as much as digits as its factorization.

1667870842259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81285120, while the sum is 65.

The spelling of 1667870842259 in words is "one trillion, six hundred sixty-seven billion, eight hundred seventy million, eight hundred forty-two thousand, two hundred fifty-nine".