1668516833667 has 8 divisors (see below), whose sum is σ = 2230653427024. Its totient is φ = 1109362398048.

The previous prime is 1668516833653. The next prime is 1668516833693. The reversal of 1668516833667 is 7663386158661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1668516833667 - 2⁷ = 1668516833539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1668516833598 and 1668516833607.

It is not an unprimeable number, because it can be changed into a prime (1668516833167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745538128 + ... + 745540365.

It is an arithmetic number, because the mean of its divisors is an integer number (278831678378).

Almost surely, 2^{1668516833667} is an apocalyptic number.

1668516833667 is a deficient number, since it is larger than the sum of its proper divisors (562136593357).

1668516833667 is a wasteful number, since it uses less digits than its factorization.

1668516833667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491078869.

The product of its digits is 156764160, while the sum is 66.

The spelling of 1668516833667 in words is "one trillion, six hundred sixty-eight billion, five hundred sixteen million, eight hundred thirty-three thousand, six hundred sixty-seven".