378811506832 has 80 divisors (see below), whose sum is σ = 843771352320. Its totient is φ = 162938563200.

The previous prime is 378811506817. The next prime is 378811506833. The reversal of 378811506832 is 238605118873.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 378811506832.

It is not an unprimeable number, because it can be changed into a prime (378811506833) 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, 2888607 + ... + 3016897.

It is an arithmetic number, because the mean of its divisors is an integer number (10547141904).

Almost surely, 2^378811506832 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 378811506832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421885676160).

378811506832 is an abundant number, since it is smaller than the sum of its proper divisors (464959845488).

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

378811506832 is a wasteful number, since it uses less digits than its factorization.

378811506832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129212 (or 129206 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 52.

The spelling of 378811506832 in words is "three hundred seventy-eight billion, eight hundred eleven million, five hundred six thousand, eight hundred thirty-two".