867721127768 has 32 divisors (see below), whose sum is σ = 1778290906320. Its totient is φ = 393661632000.

The previous prime is 867721127747. The next prime is 867721127783.

867721127768 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 867721127768.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9417173 + ... + 9508868.

Almost surely, 2^867721127768 is an apocalyptic number.

867721127768 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

867721127768 is an abundant number, since it is smaller than the sum of its proper divisors (910569778552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

867721127768 is a wasteful number, since it uses less digits than its factorization.

867721127768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18926579 (or 18926575 counting only the distinct ones).

The product of its digits is 22127616, while the sum is 62.

The spelling of 867721127768 in words is "eight hundred sixty-seven billion, seven hundred twenty-one million, one hundred twenty-seven thousand, seven hundred sixty-eight".