378271640377 has 2 divisors, whose sum is σ = 378271640378. Its totient is φ = 378271640376.

The previous prime is 378271640293. The next prime is 378271640407. The reversal of 378271640377 is 773046172873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340146734841 + 38124905536 = 583221^2 + 195256^2 .

It is a cyclic number.

It is not a de Polignac number, because 378271640377 - 2⁷ = 378271640249 is a prime.

It is not a weakly prime, because it can be changed into another prime (378271640477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189135820188 + 189135820189.

It is an arithmetic number, because the mean of its divisors is an integer number (189135820189).

Almost surely, 2^378271640377 is an apocalyptic number.

It is an amenable number.

378271640377 is a deficient number, since it is larger than the sum of its proper divisors (1).

378271640377 is an equidigital number, since it uses as much as digits as its factorization.

378271640377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8297856, while the sum is 55.

The spelling of 378271640377 in words is "three hundred seventy-eight billion, two hundred seventy-one million, six hundred forty thousand, three hundred seventy-seven".