857927839370545 has 64 divisors (see below), whose sum is σ = 1140977247621120. Its totient is φ = 615977482272768.

The previous prime is 857927839370543. The next prime is 857927839370597. The reversal of 857927839370545 is 545073938729758.

It is a cyclic number.

It is not a de Polignac number, because 857927839370545 - 2¹ = 857927839370543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (857927839370543) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5938007616 + ... + 5938152094.

It is an arithmetic number, because the mean of its divisors is an integer number (17827769494080).

Almost surely, 2^{857927839370545} is an apocalyptic number.

857927839370545 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

857927839370545 is a deficient number, since it is larger than the sum of its proper divisors (283049408250575).

857927839370545 is a wasteful number, since it uses less digits than its factorization.

857927839370545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153874.

The product of its (nonzero) digits is 16003008000, while the sum is 82.

The spelling of 857927839370545 in words is "eight hundred fifty-seven trillion, nine hundred twenty-seven billion, eight hundred thirty-nine million, three hundred seventy thousand, five hundred forty-five".