7842845073666 has 16 divisors (see below), whose sum is σ = 15685723476000. Its totient is φ = 2614276136448.

The previous prime is 7842845073659. The next prime is 7842845073691. The reversal of 7842845073666 is 6663705482487.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7842845073597 and 7842845073606.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 2514225 + ... + 4691163.

It is an arithmetic number, because the mean of its divisors is an integer number (980357717250).

Almost surely, 2^{7842845073666} is an apocalyptic number.

7842845073666 is an abundant number, since it is smaller than the sum of its proper divisors (7842878402334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7842845073666 is a wasteful number, since it uses less digits than its factorization.

7842845073666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777393.

The product of its (nonzero) digits is 325140480, while the sum is 66.

The spelling of 7842845073666 in words is "seven trillion, eight hundred forty-two billion, eight hundred forty-five million, seventy-three thousand, six hundred sixty-six".