378815613984 has 36 divisors (see below), whose sum is σ = 1077256903086. Its totient is φ = 126271871232.

The previous prime is 378815613983. The next prime is 378815614033. The reversal of 378815613984 is 489316518873.

378815613984 is a `hidden beast` number, since 3 + 7 + 8 + 8 + 1 + 5 + 613 + 9 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 312369210000 + 66446403984 = 558900^2 + 257772^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (378815613983) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 657665709 + ... + 657666284.

Almost surely, 2^378815613984 is an apocalyptic number.

It is an amenable number.

378815613984 is an abundant number, since it is smaller than the sum of its proper divisors (698441289102).

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

378815613984 is a wasteful number, since it uses less digits than its factorization.

378815613984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315332009 (or 1315331998 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The spelling of 378815613984 in words is "three hundred seventy-eight billion, eight hundred fifteen million, six hundred thirteen thousand, nine hundred eighty-four".