378247311647 has 8 divisors (see below), whose sum is σ = 396759306240. Its totient is φ = 359907522040.

The previous prime is 378247311643. The next prime is 378247311649. The reversal of 378247311647 is 746113742873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 378247311647 - 2² = 378247311643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378247311641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43046747 + ... + 43055532.

It is an arithmetic number, because the mean of its divisors is an integer number (49594913280).

Almost surely, 2^378247311647 is an apocalyptic number.

378247311647 is a deficient number, since it is larger than the sum of its proper divisors (18511994593).

378247311647 is a wasteful number, since it uses less digits than its factorization.

378247311647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86102493.

The product of its digits is 4741632, while the sum is 53.

The spelling of 378247311647 in words is "three hundred seventy-eight billion, two hundred forty-seven million, three hundred eleven thousand, six hundred forty-seven".