857439706038 has 32 divisors (see below), whose sum is σ = 1739130082560. Its totient is φ = 281771908320.

The previous prime is 857439706021. The next prime is 857439706043. The reversal of 857439706038 is 830607934758.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9424281 + ... + 9514827.

It is an arithmetic number, because the mean of its divisors is an integer number (54347815080).

Almost surely, 2^857439706038 is an apocalyptic number.

857439706038 is an abundant number, since it is smaller than the sum of its proper divisors (881690376522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857439706038 is a wasteful number, since it uses less digits than its factorization.

857439706038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112852.

The product of its (nonzero) digits is 30481920, while the sum is 60.

The spelling of 857439706038 in words is "eight hundred fifty-seven billion, four hundred thirty-nine million, seven hundred six thousand, thirty-eight".