378865774836 has 36 divisors (see below), whose sum is σ = 960957074532. Its totient is φ = 125857569024.

The previous prime is 378865774823. The next prime is 378865774877. The reversal of 378865774836 is 638477568873.

378865774836 is a `hidden beast` number, since 3 + 7 + 8 + 8 + 6 + 577 + 48 + 3 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 341516347236 + 37349427600 = 584394^2 + 193260^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17948581 + ... + 17969676.

Almost surely, 2^378865774836 is an apocalyptic number.

378865774836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

378865774836 is an abundant number, since it is smaller than the sum of its proper divisors (582091299696).

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

378865774836 is a wasteful number, since it uses less digits than its factorization.

378865774836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35918560 (or 35918555 counting only the distinct ones).

The product of its digits is 1137991680, while the sum is 72.

The spelling of 378865774836 in words is "three hundred seventy-eight billion, eight hundred sixty-five million, seven hundred seventy-four thousand, eight hundred thirty-six".