7147838178361 has 2 divisors, whose sum is σ = 7147838178362. Its totient is φ = 7147838178360.

The previous prime is 7147838178359. The next prime is 7147838178473. The reversal of 7147838178361 is 1638718387417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4299402250000 + 2848435928361 = 2073500^2 + 1687731^2 .

It is a cyclic number.

It is not a de Polignac number, because 7147838178361 - 2¹ = 7147838178359 is a prime.

Together with 7147838178359, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 7147838178293 and 7147838178302.

It is not a weakly prime, because it can be changed into another prime (7147838178331) 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, 3573919089180 + 3573919089181.

It is an arithmetic number, because the mean of its divisors is an integer number (3573919089181).

Almost surely, 2^{7147838178361} is an apocalyptic number.

It is an amenable number.

7147838178361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7147838178361 is an equidigital number, since it uses as much as digits as its factorization.

7147838178361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37933056, while the sum is 64.

The spelling of 7147838178361 in words is "seven trillion, one hundred forty-seven billion, eight hundred thirty-eight million, one hundred seventy-eight thousand, three hundred sixty-one".