378832816857 has 16 divisors (see below), whose sum is σ = 568804700160. Its totient is φ = 222189334800.

The previous prime is 378832816771. The next prime is 378832816877. The reversal of 378832816857 is 758618238873.

It is not a de Polignac number, because 378832816857 - 2¹⁰ = 378832815833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378832816877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185156757 + ... + 185158802.

It is an arithmetic number, because the mean of its divisors is an integer number (35550293760).

Almost surely, 2^378832816857 is an apocalyptic number.

It is an amenable number.

378832816857 is a deficient number, since it is larger than the sum of its proper divisors (189971883303).

378832816857 is a wasteful number, since it uses less digits than its factorization.

378832816857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370315604.

The product of its digits is 108380160, while the sum is 66.

The spelling of 378832816857 in words is "three hundred seventy-eight billion, eight hundred thirty-two million, eight hundred sixteen thousand, eight hundred fifty-seven".