67278657860 has 12 divisors (see below), whose sum is σ = 141285181548. Its totient is φ = 26911463136.

The previous prime is 67278657857. The next prime is 67278657869. The reversal of 67278657860 is 6875687276.

It can be written as a sum of positive squares in 2 ways, for example, as 29301222976 + 37977434884 = 171176^2 + 194878^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67278657793 and 67278657802.

It is not an unprimeable number, because it can be changed into a prime (67278657869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1681966427 + ... + 1681966466.

It is an arithmetic number, because the mean of its divisors is an integer number (11773765129).

Almost surely, 2^67278657860 is an apocalyptic number.

It is an amenable number.

67278657860 is an abundant number, since it is smaller than the sum of its proper divisors (74006523688).

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

67278657860 is a wasteful number, since it uses less digits than its factorization.

67278657860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3363932902 (or 3363932900 counting only the distinct ones).

The product of its (nonzero) digits is 47416320, while the sum is 62.

The spelling of 67278657860 in words is "sixty-seven billion, two hundred seventy-eight million, six hundred fifty-seven thousand, eight hundred sixty".