857798897783 has 2 divisors, whose sum is σ = 857798897784. Its totient is φ = 857798897782.

The previous prime is 857798897743. The next prime is 857798897801. The reversal of 857798897783 is 387798897758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 857798897783 - 2³⁶ = 789079421047 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 857798897695 and 857798897704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857798897723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428899448891 + 428899448892.

It is an arithmetic number, because the mean of its divisors is an integer number (428899448892).

Almost surely, 2^857798897783 is an apocalyptic number.

857798897783 is a deficient number, since it is larger than the sum of its proper divisors (1).

857798897783 is an equidigital number, since it uses as much as digits as its factorization.

857798897783 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11948912640, while the sum is 86.

The spelling of 857798897783 in words is "eight hundred fifty-seven billion, seven hundred ninety-eight million, eight hundred ninety-seven thousand, seven hundred eighty-three".