378261666416 has 20 divisors (see below), whose sum is σ = 733994111400. Its totient is φ = 188843831232.

The previous prime is 378261666379. The next prime is 378261666439. The reversal of 378261666416 is 614666162873.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17926751 + ... + 17947838.

It is an arithmetic number, because the mean of its divisors is an integer number (36699705570).

Almost surely, 2^378261666416 is an apocalyptic number.

It is an amenable number.

378261666416 is a deficient number, since it is larger than the sum of its proper divisors (355732444984).

378261666416 is a wasteful number, since it uses less digits than its factorization.

378261666416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35875256 (or 35875250 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 56.

The spelling of 378261666416 in words is "three hundred seventy-eight billion, two hundred sixty-one million, six hundred sixty-six thousand, four hundred sixteen".