666181339007 has 8 divisors (see below), whose sum is σ = 672160605312. Its totient is φ = 660218256000.

The previous prime is 666181339001. The next prime is 666181339009. The reversal of 666181339007 is 700933181666.

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 666181339007 - 2⁸ = 666181338751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666181339001) 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, 3963119 + ... + 4127792.

It is an arithmetic number, because the mean of its divisors is an integer number (84020075664).

Almost surely, 2^666181339007 is an apocalyptic number.

666181339007 is a deficient number, since it is larger than the sum of its proper divisors (5979266305).

666181339007 is a wasteful number, since it uses less digits than its factorization.

666181339007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8091649.

The product of its (nonzero) digits is 979776, while the sum is 50.

The spelling of 666181339007 in words is "six hundred sixty-six billion, one hundred eighty-one million, three hundred thirty-nine thousand, seven".