215178830378 has 16 divisors (see below), whose sum is σ = 335203962720. Its totient is φ = 103518865296.

The previous prime is 215178830327. The next prime is 215178830423. The reversal of 215178830378 is 873038871512.

215178830378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 18666473 + ... + 18677996.

It is an arithmetic number, because the mean of its divisors is an integer number (20950247670).

Almost surely, 2^215178830378 is an apocalyptic number.

215178830378 is a deficient number, since it is larger than the sum of its proper divisors (120025132342).

215178830378 is a wasteful number, since it uses less digits than its factorization.

215178830378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37344581.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 215178830378 in words is "two hundred fifteen billion, one hundred seventy-eight million, eight hundred thirty thousand, three hundred seventy-eight".