378834552866 has 32 divisors (see below), whose sum is σ = 720084090240. Its totient is φ = 145178236800.

The previous prime is 378834552851. The next prime is 378834552869. The reversal of 378834552866 is 668255438873.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (378834552869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20154251 + ... + 20173038.

It is an arithmetic number, because the mean of its divisors is an integer number (22502627820).

Almost surely, 2^378834552866 is an apocalyptic number.

378834552866 is a deficient number, since it is larger than the sum of its proper divisors (341249537374).

378834552866 is a wasteful number, since it uses less digits than its factorization.

378834552866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40327370.

The product of its digits is 232243200, while the sum is 65.

The spelling of 378834552866 in words is "three hundred seventy-eight billion, eight hundred thirty-four million, five hundred fifty-two thousand, eight hundred sixty-six".