857178833378331 has 16 divisors (see below), whose sum is σ = 1142984184785280. Its totient is φ = 571413019869120.

The previous prime is 857178833378279. The next prime is 857178833378459. The reversal of 857178833378331 is 133873338871758.

It is not a de Polignac number, because 857178833378331 - 2¹⁵ = 857178833345563 is a prime.

It is a super-2 number, since 2×857178833378331² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (857178833378831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5332656760 + ... + 5332817498.

It is an arithmetic number, because the mean of its divisors is an integer number (71436511549080).

Almost surely, 2^{857178833378331} is an apocalyptic number.

857178833378331 is a deficient number, since it is larger than the sum of its proper divisors (285805351406949).

857178833378331 is a wasteful number, since it uses less digits than its factorization.

857178833378331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272666.

The product of its digits is 1706987520, while the sum is 75.

The spelling of 857178833378331 in words is "eight hundred fifty-seven trillion, one hundred seventy-eight billion, eight hundred thirty-three million, three hundred seventy-eight thousand, three hundred thirty-one".