378244876777 has 2 divisors, whose sum is σ = 378244876778. Its totient is φ = 378244876776.

The previous prime is 378244876753. The next prime is 378244876813. The reversal of 378244876777 is 777678442873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337269401001 + 40975475776 = 580749^2 + 202424^2 .

It is a cyclic number.

It is not a de Polignac number, because 378244876777 - 2¹¹ = 378244874729 is a prime.

It is a super-4 number, since 4×378244876777⁴ (a number of 47 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (378244826777) by changing a digit.

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 as a sum of consecutive naturals, namely, 189122438388 + 189122438389.

It is an arithmetic number, because the mean of its divisors is an integer number (189122438389).

Almost surely, 2^378244876777 is an apocalyptic number.

It is an amenable number.

378244876777 is a deficient number, since it is larger than the sum of its proper divisors (1).

378244876777 is an equidigital number, since it uses as much as digits as its factorization.

378244876777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 619573248, while the sum is 70.

The spelling of 378244876777 in words is "three hundred seventy-eight billion, two hundred forty-four million, eight hundred seventy-six thousand, seven hundred seventy-seven".