857680545378 has 16 divisors (see below), whose sum is σ = 1715685971616. Its totient is φ = 285839368320.

The previous prime is 857680545343. The next prime is 857680545419. The reversal of 857680545378 is 873545086758.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13502376 + ... + 13565747.

It is an arithmetic number, because the mean of its divisors is an integer number (107230373226).

Almost surely, 2^857680545378 is an apocalyptic number.

857680545378 is an abundant number, since it is smaller than the sum of its proper divisors (858005426238).

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

857680545378 is a wasteful number, since it uses less digits than its factorization.

857680545378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27073409.

The product of its (nonzero) digits is 225792000, while the sum is 66.

The spelling of 857680545378 in words is "eight hundred fifty-seven billion, six hundred eighty million, five hundred forty-five thousand, three hundred seventy-eight".