67681368865 has 8 divisors (see below), whose sum is σ = 88601064768. Its totient is φ = 49222813680.

The previous prime is 67681368851. The next prime is 67681368877. The reversal of 67681368865 is 56886318676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67681368865 - 2¹¹ = 67681366817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67681368797 and 67681368806.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 615285117 + ... + 615285226.

It is an arithmetic number, because the mean of its divisors is an integer number (11075133096).

Almost surely, 2^67681368865 is an apocalyptic number.

It is an amenable number.

67681368865 is a deficient number, since it is larger than the sum of its proper divisors (20919695903).

67681368865 is a wasteful number, since it uses less digits than its factorization.

67681368865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230570359.

The product of its digits is 69672960, while the sum is 64.

The spelling of 67681368865 in words is "sixty-seven billion, six hundred eighty-one million, three hundred sixty-eight thousand, eight hundred sixty-five".