7842845073691 has 2 divisors, whose sum is σ = 7842845073692. Its totient is φ = 7842845073690.

The previous prime is 7842845073659. The next prime is 7842845073709. The reversal of 7842845073691 is 1963705482487.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7842845073691 - 2⁵ = 7842845073659 is a prime.

It is not a weakly prime, because it can be changed into another prime (7842845073611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3921422536845 + 3921422536846.

It is an arithmetic number, because the mean of its divisors is an integer number (3921422536846).

It is a 2-persistent number, because it is pandigital, and so is 2⋅7842845073691 = 15685690147382, but 3⋅7842845073691 = 23528535221073 is not.

Almost surely, 2^{7842845073691} is an apocalyptic number.

7842845073691 is a deficient number, since it is larger than the sum of its proper divisors (1).

7842845073691 is an equidigital number, since it uses as much as digits as its factorization.

7842845073691 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 64.

The spelling of 7842845073691 in words is "seven trillion, eight hundred forty-two billion, eight hundred forty-five million, seventy-three thousand, six hundred ninety-one".