857680545379 has 32 divisors (see below), whose sum is σ = 1045762185600. Its totient is φ = 686654226432.

The previous prime is 857680545343. The next prime is 857680545419. The reversal of 857680545379 is 973545086758.

It is a cyclic number.

It is not a de Polignac number, because 857680545379 - 2⁹ = 857680544867 is a prime.

It is a super-3 number, since 3×857680545379³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (857680545329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20422867 + ... + 20464819.

It is an arithmetic number, because the mean of its divisors is an integer number (32680068300).

Almost surely, 2^857680545379 is an apocalyptic number.

857680545379 is a deficient number, since it is larger than the sum of its proper divisors (188081640221).

857680545379 is a wasteful number, since it uses less digits than its factorization.

857680545379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43279.

The product of its (nonzero) digits is 254016000, while the sum is 67.

The spelling of 857680545379 in words is "eight hundred fifty-seven billion, six hundred eighty million, five hundred forty-five thousand, three hundred seventy-nine".