378811504161 has 12 divisors (see below), whose sum is σ = 547248146640. Its totient is φ = 252505937880.

The previous prime is 378811504133. The next prime is 378811504187. The reversal of 378811504161 is 161405118873.

378811504161 is a `hidden beast` number, since 3 + 7 + 8 + 81 + 1 + 504 + 1 + 61 = 666.

It is not a de Polignac number, because 378811504161 - 2⁹ = 378811503649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378811504121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2853571 + ... + 2983368.

It is an arithmetic number, because the mean of its divisors is an integer number (45604012220).

Almost surely, 2^378811504161 is an apocalyptic number.

It is an amenable number.

378811504161 is a deficient number, since it is larger than the sum of its proper divisors (168436642479).

378811504161 is a wasteful number, since it uses less digits than its factorization.

378811504161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5844156 (or 5844153 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 378811504161 in words is "three hundred seventy-eight billion, eight hundred eleven million, five hundred four thousand, one hundred sixty-one".