278055864067 has 2 divisors, whose sum is σ = 278055864068. Its totient is φ = 278055864066.

The previous prime is 278055864029. The next prime is 278055864077. The reversal of 278055864067 is 760468550872.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-278055864067 is a prime.

It is not a weakly prime, because it can be changed into another prime (278055864007) 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 as a sum of consecutive naturals, namely, 139027932033 + 139027932034.

It is an arithmetic number, because the mean of its divisors is an integer number (139027932034).

Almost surely, 2^278055864067 is an apocalyptic number.

278055864067 is a deficient number, since it is larger than the sum of its proper divisors (1).

278055864067 is an equidigital number, since it uses as much as digits as its factorization.

278055864067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22579200, while the sum is 58.

The spelling of 278055864067 in words is "two hundred seventy-eight billion, fifty-five million, eight hundred sixty-four thousand, sixty-seven".