67778648156 has 12 divisors (see below), whose sum is σ = 122702725320. Its totient is φ = 32720726640.

The previous prime is 67778648143. The next prime is 67778648167. The reversal of 67778648156 is 65184687776.

It is a hoax number, since the sum of its digits (65) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 67778648092 and 67778648101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292149230 + ... + 292149461.

It is an arithmetic number, because the mean of its divisors is an integer number (10225227110).

Almost surely, 2^67778648156 is an apocalyptic number.

It is an amenable number.

67778648156 is a deficient number, since it is larger than the sum of its proper divisors (54924077164).

67778648156 is a wasteful number, since it uses less digits than its factorization.

67778648156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584298724 (or 584298722 counting only the distinct ones).

The product of its digits is 94832640, while the sum is 65.

The spelling of 67778648156 in words is "sixty-seven billion, seven hundred seventy-eight million, six hundred forty-eight thousand, one hundred fifty-six".