1216414106555 has 4 divisors (see below), whose sum is σ = 1459696927872. Its totient is φ = 973131285240.

The previous prime is 1216414106549. The next prime is 1216414106561. The reversal of 1216414106555 is 5556014146121.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1216414106549) and next prime (1216414106561).

It is not a de Polignac number, because 1216414106555 - 2¹⁰ = 1216414105531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121641410651 + ... + 121641410660.

It is an arithmetic number, because the mean of its divisors is an integer number (364924231968).

Almost surely, 2^{1216414106555} is an apocalyptic number.

1216414106555 is a deficient number, since it is larger than the sum of its proper divisors (243282821317).

1216414106555 is an equidigital number, since it uses as much as digits as its factorization.

1216414106555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243282821316.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 1216414106555 in words is "one trillion, two hundred sixteen billion, four hundred fourteen million, one hundred six thousand, five hundred fifty-five".