1216081423807 has 2 divisors, whose sum is σ = 1216081423808. Its totient is φ = 1216081423806.

The previous prime is 1216081423801. The next prime is 1216081423811. The reversal of 1216081423807 is 7083241806121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1216081423807 - 2⁷ = 1216081423679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1216081423801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608040711903 + 608040711904.

It is an arithmetic number, because the mean of its divisors is an integer number (608040711904).

Almost surely, 2^{1216081423807} is an apocalyptic number.

1216081423807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1216081423807 is an equidigital number, since it uses as much as digits as its factorization.

1216081423807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 1216081423807 in words is "one trillion, two hundred sixteen billion, eighty-one million, four hundred twenty-three thousand, eight hundred seven".