378844890172 has 24 divisors (see below), whose sum is σ = 790632815616. Its totient is φ = 155302873968.

The previous prime is 378844890157. The next prime is 378844890191. The reversal of 378844890172 is 271098448873.

It is a self number, because there is not a number n which added to its sum of digits gives 378844890172.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294133588 + ... + 294134875.

It is an arithmetic number, because the mean of its divisors is an integer number (32943033984).

Almost surely, 2^378844890172 is an apocalyptic number.

It is an amenable number.

378844890172 is an abundant number, since it is smaller than the sum of its proper divisors (411787925444).

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

378844890172 is a wasteful number, since it uses less digits than its factorization.

378844890172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588268497 (or 588268495 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 61.

The spelling of 378844890172 in words is "three hundred seventy-eight billion, eight hundred forty-four million, eight hundred ninety thousand, one hundred seventy-two".