1283194054217 has 2 divisors, whose sum is σ = 1283194054218. Its totient is φ = 1283194054216.

The previous prime is 1283194054201. The next prime is 1283194054291. The reversal of 1283194054217 is 7124504913821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 655936390201 + 627257664016 = 809899^2 + 791996^2 .

It is a cyclic number.

It is not a de Polignac number, because 1283194054217 - 2⁴ = 1283194054201 is a prime.

It is a super-2 number, since 2×1283194054217² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1283194054717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 641597027108 + 641597027109.

It is an arithmetic number, because the mean of its divisors is an integer number (641597027109).

Almost surely, 2^{1283194054217} is an apocalyptic number.

It is an amenable number.

1283194054217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1283194054217 is an equidigital number, since it uses as much as digits as its factorization.

1283194054217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 1283194054217 in words is "one trillion, two hundred eighty-three billion, one hundred ninety-four million, fifty-four thousand, two hundred seventeen".