6867501578881 has 4 divisors (see below), whose sum is σ = 6916908065200. Its totient is φ = 6818095092564.

The previous prime is 6867501578851. The next prime is 6867501578911. The reversal of 6867501578881 is 1888751057686.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (6867501578851) and next prime (6867501578911).

It is a cyclic number.

It is not a de Polignac number, because 6867501578881 - 2⁹ = 6867501578369 is a prime.

It is a super-2 number, since 2×6867501578881² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6867501578881.

It is not an unprimeable number, because it can be changed into a prime (6867501578851) 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, 24703242951 + ... + 24703243228.

It is an arithmetic number, because the mean of its divisors is an integer number (1729227016300).

Almost surely, 2^{6867501578881} is an apocalyptic number.

It is an amenable number.

6867501578881 is a deficient number, since it is larger than the sum of its proper divisors (49406486319).

6867501578881 is a wasteful number, since it uses less digits than its factorization.

6867501578881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49406486318.

The product of its (nonzero) digits is 180633600, while the sum is 70.

The spelling of 6867501578881 in words is "six trillion, eight hundred sixty-seven billion, five hundred one million, five hundred seventy-eight thousand, eight hundred eighty-one".