857680822147 has 2 divisors, whose sum is σ = 857680822148. Its totient is φ = 857680822146.

The previous prime is 857680822087. The next prime is 857680822253. The reversal of 857680822147 is 741228086758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 857680822147 - 2¹⁵ = 857680789379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 857680822091 and 857680822100.

It is not a weakly prime, because it can be changed into another prime (857680822847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428840411073 + 428840411074.

It is an arithmetic number, because the mean of its divisors is an integer number (428840411074).

Almost surely, 2^857680822147 is an apocalyptic number.

857680822147 is a deficient number, since it is larger than the sum of its proper divisors (1).

857680822147 is an equidigital number, since it uses as much as digits as its factorization.

857680822147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12042240, while the sum is 58.

The spelling of 857680822147 in words is "eight hundred fifty-seven billion, six hundred eighty million, eight hundred twenty-two thousand, one hundred forty-seven".