857297611943 has 4 divisors (see below), whose sum is σ = 857303602488. Its totient is φ = 857291621400.

The previous prime is 857297611931. The next prime is 857297611969. The reversal of 857297611943 is 349116792758.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 857297611943 - 2⁴ = 857297611927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857297611903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2775221 + ... + 3068622.

It is an arithmetic number, because the mean of its divisors is an integer number (214325900622).

Almost surely, 2^857297611943 is an apocalyptic number.

857297611943 is a deficient number, since it is larger than the sum of its proper divisors (5990545).

857297611943 is a wasteful number, since it uses less digits than its factorization.

857297611943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990544.

The product of its digits is 22861440, while the sum is 62.

The spelling of 857297611943 in words is "eight hundred fifty-seven billion, two hundred ninety-seven million, six hundred eleven thousand, nine hundred forty-three".