857806343488 has 28 divisors (see below), whose sum is σ = 1702239135520. Its totient is φ = 428895695232.

The previous prime is 857806343479. The next prime is 857806343489. The reversal of 857806343488 is 884343608758.

It is a super-2 number, since 2×857806343488² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857806343489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6410773 + ... + 6543211.

It is an arithmetic number, because the mean of its divisors is an integer number (60794254840).

Almost surely, 2^857806343488 is an apocalyptic number.

It is an amenable number.

857806343488 is a deficient number, since it is larger than the sum of its proper divisors (844432792032).

857806343488 is a wasteful number, since it uses less digits than its factorization.

857806343488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233654 (or 233644 counting only the distinct ones).

The product of its (nonzero) digits is 123863040, while the sum is 64.

The spelling of 857806343488 in words is "eight hundred fifty-seven billion, eight hundred six million, three hundred forty-three thousand, four hundred eighty-eight".