857680545343 has 2 divisors, whose sum is σ = 857680545344. Its totient is φ = 857680545342.

The previous prime is 857680545329. The next prime is 857680545419. The reversal of 857680545343 is 343545086758.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-857680545343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (857680545313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428840272671 + 428840272672.

It is an arithmetic number, because the mean of its divisors is an integer number (428840272672).

Almost surely, 2^857680545343 is an apocalyptic number.

857680545343 is a deficient number, since it is larger than the sum of its proper divisors (1).

857680545343 is an equidigital number, since it uses as much as digits as its factorization.

857680545343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384000, while the sum is 58.

The spelling of 857680545343 in words is "eight hundred fifty-seven billion, six hundred eighty million, five hundred forty-five thousand, three hundred forty-three".