857275112279 has 2 divisors, whose sum is σ = 857275112280. Its totient is φ = 857275112278.

The previous prime is 857275112189. The next prime is 857275112339. The reversal of 857275112279 is 972211572758.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857275112279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857275112579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428637556139 + 428637556140.

It is an arithmetic number, because the mean of its divisors is an integer number (428637556140).

Almost surely, 2^857275112279 is an apocalyptic number.

857275112279 is a deficient number, since it is larger than the sum of its proper divisors (1).

857275112279 is an equidigital number, since it uses as much as digits as its factorization.

857275112279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4939200, while the sum is 56.

The spelling of 857275112279 in words is "eight hundred fifty-seven billion, two hundred seventy-five million, one hundred twelve thousand, two hundred seventy-nine".