866874851011 has 4 divisors (see below), whose sum is σ = 933557531872. Its totient is φ = 800192170152.

The previous prime is 866874850987. The next prime is 866874851023. The reversal of 866874851011 is 110158478668.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 866874851011 - 2¹³ = 866874842819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866874851111) 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, 33341340411 + ... + 33341340436.

It is an arithmetic number, because the mean of its divisors is an integer number (233389382968).

Almost surely, 2^866874851011 is an apocalyptic number.

866874851011 is a deficient number, since it is larger than the sum of its proper divisors (66682680861).

866874851011 is a wasteful number, since it uses less digits than its factorization.

866874851011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66682680860.

The product of its (nonzero) digits is 2580480, while the sum is 55.

The spelling of 866874851011 in words is "eight hundred sixty-six billion, eight hundred seventy-four million, eight hundred fifty-one thousand, eleven".