1384611878417 has 2 divisors, whose sum is σ = 1384611878418. Its totient is φ = 1384611878416.

The previous prime is 1384611878389. The next prime is 1384611878501. The reversal of 1384611878417 is 7148781164831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1149460592641 + 235151285776 = 1072129^2 + 484924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1384611878417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1384611878717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692305939208 + 692305939209.

It is an arithmetic number, because the mean of its divisors is an integer number (692305939209).

Almost surely, 2^{1384611878417} is an apocalyptic number.

It is an amenable number.

1384611878417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1384611878417 is an equidigital number, since it uses as much as digits as its factorization.

1384611878417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7225344, while the sum is 59.

The spelling of 1384611878417 in words is "one trillion, three hundred eighty-four billion, six hundred eleven million, eight hundred seventy-eight thousand, four hundred seventeen".