866882868653 has 4 divisors (see below), whose sum is σ = 866967477600. Its totient is φ = 866798259708.

The previous prime is 866882868491. The next prime is 866882868667. The reversal of 866882868653 is 356868288668.

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 a cyclic number.

It is not a de Polignac number, because 866882868653 - 2¹⁶ = 866882803117 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 (866882868253) 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, 42289103 + ... + 42309596.

It is an arithmetic number, because the mean of its divisors is an integer number (216741869400).

Almost surely, 2^866882868653 is an apocalyptic number.

It is an amenable number.

866882868653 is a deficient number, since it is larger than the sum of its proper divisors (84608947).

866882868653 is a wasteful number, since it uses less digits than its factorization.

866882868653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84608946.

The product of its digits is 1274019840, while the sum is 74.

The spelling of 866882868653 in words is "eight hundred sixty-six billion, eight hundred eighty-two million, eight hundred sixty-eight thousand, six hundred fifty-three".