67447927868 has 6 divisors (see below), whose sum is σ = 118033873776. Its totient is φ = 33723963932.

The previous prime is 67447927867. The next prime is 67447927891. The reversal of 67447927868 is 86872974476.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 67447927798 and 67447927807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67447927867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8430990980 + ... + 8430990987.

It is an arithmetic number, because the mean of its divisors is an integer number (19672312296).

Almost surely, 2^67447927868 is an apocalyptic number.

It is an amenable number.

67447927868 is a deficient number, since it is larger than the sum of its proper divisors (50585945908).

67447927868 is a wasteful number, since it uses less digits than its factorization.

67447927868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16861981971 (or 16861981969 counting only the distinct ones).

The product of its digits is 227598336, while the sum is 68.

The spelling of 67447927868 in words is "sixty-seven billion, four hundred forty-seven million, nine hundred twenty-seven thousand, eight hundred sixty-eight".