866824773426119 has 4 divisors (see below), whose sum is σ = 866831031459144. Its totient is φ = 866818515393096.

The previous prime is 866824773426047. The next prime is 866824773426127. The reversal of 866824773426119 is 911624377428668.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-866824773426119 is a prime.

It is a super-2 number, since 2×866824773426119² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866824773426719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3128808737 + ... + 3129085770.

It is an arithmetic number, because the mean of its divisors is an integer number (216707757864786).

Almost surely, 2^{866824773426119} is an apocalyptic number.

866824773426119 is a deficient number, since it is larger than the sum of its proper divisors (6258033025).

866824773426119 is a wasteful number, since it uses less digits than its factorization.

866824773426119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6258033024.

The product of its digits is 1170505728, while the sum is 74.

The spelling of 866824773426119 in words is "eight hundred sixty-six trillion, eight hundred twenty-four billion, seven hundred seventy-three million, four hundred twenty-six thousand, one hundred nineteen".