866667004041 has 4 divisors (see below), whose sum is σ = 1155556005392. Its totient is φ = 577778002692.

The previous prime is 866667004037. The next prime is 866667004081. The reversal of 866667004041 is 140400766668.

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 866667004041 - 2² = 866667004037 is a prime.

It is a super-2 number, since 2×866667004041² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (866667004081) 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, 144444500671 + ... + 144444500676.

It is an arithmetic number, because the mean of its divisors is an integer number (288889001348).

Almost surely, 2^866667004041 is an apocalyptic number.

It is an amenable number.

866667004041 is a deficient number, since it is larger than the sum of its proper divisors (288889001351).

866667004041 is a wasteful number, since it uses less digits than its factorization.

866667004041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288889001350.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 866667004041 in words is "eight hundred sixty-six billion, six hundred sixty-seven million, four thousand, forty-one".