867864468693 has 4 divisors (see below), whose sum is σ = 1157152624928. Its totient is φ = 578576312460.

The previous prime is 867864468689. The next prime is 867864468767. The reversal of 867864468693 is 396864468768.

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 867864468693 - 2² = 867864468689 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 (867864468673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144644078113 + ... + 144644078118.

It is an arithmetic number, because the mean of its divisors is an integer number (289288156232).

Almost surely, 2^867864468693 is an apocalyptic number.

It is an amenable number.

867864468693 is a deficient number, since it is larger than the sum of its proper divisors (289288156235).

867864468693 is a wasteful number, since it uses less digits than its factorization.

867864468693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289288156234.

The product of its digits is 2006581248, while the sum is 75.

Adding to 867864468693 its sum of digits (75), we get a palindrome (867864468768).

The spelling of 867864468693 in words is "eight hundred sixty-seven billion, eight hundred sixty-four million, four hundred sixty-eight thousand, six hundred ninety-three".