1016664066217 has 4 divisors (see below), whose sum is σ = 1076467834836. Its totient is φ = 956860297600.

The previous prime is 1016664066193. The next prime is 1016664066221. The reversal of 1016664066217 is 7126604666101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 870584168601 + 146079897616 = 933051^2 + 382204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1016664066217 - 2²⁷ = 1016529848489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1016664066277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29901884284 + ... + 29901884317.

It is an arithmetic number, because the mean of its divisors is an integer number (269116958709).

Almost surely, 2^{1016664066217} is an apocalyptic number.

1016664066217 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1016664066217 is a deficient number, since it is larger than the sum of its proper divisors (59803768619).

1016664066217 is an equidigital number, since it uses as much as digits as its factorization.

1016664066217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59803768618.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 1016664066217 in words is "one trillion, sixteen billion, six hundred sixty-four million, sixty-six thousand, two hundred seventeen".