378166847671 has 2 divisors, whose sum is σ = 378166847672. Its totient is φ = 378166847670.

The previous prime is 378166847651. The next prime is 378166847693. The reversal of 378166847671 is 176748661873.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378166847671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378166847621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189083423835 + 189083423836.

It is an arithmetic number, because the mean of its divisors is an integer number (189083423836).

Almost surely, 2^378166847671 is an apocalyptic number.

378166847671 is a deficient number, since it is larger than the sum of its proper divisors (1).

378166847671 is an equidigital number, since it uses as much as digits as its factorization.

378166847671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56899584, while the sum is 64.

The spelling of 378166847671 in words is "three hundred seventy-eight billion, one hundred sixty-six million, eight hundred forty-seven thousand, six hundred seventy-one".