845870271793 has 2 divisors, whose sum is σ = 845870271794. Its totient is φ = 845870271792.

The previous prime is 845870271761. The next prime is 845870271817. The reversal of 845870271793 is 397172078548.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 545224222449 + 300646049344 = 738393^2 + 548312^2 .

It is a cyclic number.

It is not a de Polignac number, because 845870271793 - 2⁵ = 845870271761 is a prime.

It is not a weakly prime, because it can be changed into another prime (845870271703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422935135896 + 422935135897.

It is an arithmetic number, because the mean of its divisors is an integer number (422935135897).

Almost surely, 2^845870271793 is an apocalyptic number.

It is an amenable number.

845870271793 is a deficient number, since it is larger than the sum of its proper divisors (1).

845870271793 is an equidigital number, since it uses as much as digits as its factorization.

845870271793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23708160, while the sum is 61.

The spelling of 845870271793 in words is "eight hundred forty-five billion, eight hundred seventy million, two hundred seventy-one thousand, seven hundred ninety-three".