1216474317559 has 2 divisors, whose sum is σ = 1216474317560. Its totient is φ = 1216474317558.

The previous prime is 1216474317449. The next prime is 1216474317563. The reversal of 1216474317559 is 9557134746121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1216474317559 - 2²¹ = 1216472220407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216474357559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608237158779 + 608237158780.

It is an arithmetic number, because the mean of its divisors is an integer number (608237158780).

Almost surely, 2^{1216474317559} is an apocalyptic number.

1216474317559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216474317559 is an equidigital number, since it uses as much as digits as its factorization.

1216474317559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6350400, while the sum is 55.

The spelling of 1216474317559 in words is "one trillion, two hundred sixteen billion, four hundred seventy-four million, three hundred seventeen thousand, five hundred fifty-nine".