67278453688 has 16 divisors (see below), whose sum is σ = 126293967000. Its totient is φ = 33600062496.

The previous prime is 67278453679. The next prime is 67278453689. The reversal of 67278453688 is 88635487276.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67278453689) 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, 4888243 + ... + 4901986.

Almost surely, 2^67278453688 is an apocalyptic number.

It is an amenable number.

67278453688 is a deficient number, since it is larger than the sum of its proper divisors (59015513312).

67278453688 is a wasteful number, since it uses less digits than its factorization.

67278453688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9791094 (or 9791090 counting only the distinct ones).

The product of its digits is 108380160, while the sum is 64.

The spelling of 67278453688 in words is "sixty-seven billion, two hundred seventy-eight million, four hundred fifty-three thousand, six hundred eighty-eight".