666666700041 has 4 divisors (see below), whose sum is σ = 888888933392. Its totient is φ = 444444466692.

The previous prime is 666666700033. The next prime is 666666700067. The reversal of 666666700041 is 140007666666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 666666700041 - 2³ = 666666700033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666666700241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111111116671 + ... + 111111116676.

It is an arithmetic number, because the mean of its divisors is an integer number (222222233348).

Almost surely, 2^666666700041 is an apocalyptic number.

It is an amenable number.

666666700041 is a deficient number, since it is larger than the sum of its proper divisors (222222233351).

666666700041 is a wasteful number, since it uses less digits than its factorization.

666666700041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222222233350.

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 666666700041 in words is "six hundred sixty-six billion, six hundred sixty-six million, seven hundred thousand, forty-one".