1671411066617 has 4 divisors (see below), whose sum is σ = 1671688301220. Its totient is φ = 1671133832016.

The previous prime is 1671411066607. The next prime is 1671411066641. The reversal of 1671411066617 is 7166601141761.

It is a happy number.

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 1334847486736 + 336563579881 = 1155356^2 + 580141^2 .

It is a cyclic number.

It is not a de Polignac number, because 1671411066617 - 2³⁴ = 1654231197433 is a prime.

It is a super-2 number, since 2×1671411066617² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1671411066607) 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, 138608258 + ... + 138620315.

It is an arithmetic number, because the mean of its divisors is an integer number (417922075305).

Almost surely, 2^{1671411066617} is an apocalyptic number.

It is an amenable number.

1671411066617 is a deficient number, since it is larger than the sum of its proper divisors (277234603).

1671411066617 is an equidigital number, since it uses as much as digits as its factorization.

1671411066617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277234602.

The product of its (nonzero) digits is 254016, while the sum is 47.

The spelling of 1671411066617 in words is "one trillion, six hundred seventy-one billion, four hundred eleven million, sixty-six thousand, six hundred seventeen".