4278278126068 has 12 divisors (see below), whose sum is σ = 7598732791552. Its totient is φ = 2107211614200.

The previous prime is 4278278126039. The next prime is 4278278126099. The reversal of 4278278126068 is 8606218728724.

It is a happy number.

It is a super-2 number, since 2×4278278126068² (a number of 26 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (61) 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 = 4278278125997 and 4278278126015.

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, 7981861908 + ... + 7981862443.

Almost surely, 2^{4278278126068} is an apocalyptic number.

It is an amenable number.

4278278126068 is a deficient number, since it is larger than the sum of its proper divisors (3320454665484).

4278278126068 is a wasteful number, since it uses less digits than its factorization.

4278278126068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15963724422 (or 15963724420 counting only the distinct ones).

The product of its (nonzero) digits is 28901376, while the sum is 61.

The spelling of 4278278126068 in words is "four trillion, two hundred seventy-eight billion, two hundred seventy-eight million, one hundred twenty-six thousand, sixty-eight".