6665106651667 has 8 divisors (see below), whose sum is σ = 6731375255712. Its totient is φ = 6598843488000.

The previous prime is 6665106651661. The next prime is 6665106651751. The reversal of 6665106651667 is 7661566015666.

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

It is a cyclic number.

It is not a de Polignac number, because 6665106651667 - 2³⁵ = 6630746913299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6665106651661) 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, 1124778 + ... + 3820384.

It is an arithmetic number, because the mean of its divisors is an integer number (841421906964).

Almost surely, 2^{6665106651667} is an apocalyptic number.

6665106651667 is a deficient number, since it is larger than the sum of its proper divisors (66268604045).

6665106651667 is a wasteful number, since it uses less digits than its factorization.

6665106651667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2720189.

The product of its (nonzero) digits is 48988800, while the sum is 61.

The spelling of 6665106651667 in words is "six trillion, six hundred sixty-five billion, one hundred six million, six hundred fifty-one thousand, six hundred sixty-seven".