278085311047 has 2 divisors, whose sum is σ = 278085311048. Its totient is φ = 278085311046.

The previous prime is 278085310969. The next prime is 278085311059. The reversal of 278085311047 is 740113580872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-278085311047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 278085310988 and 278085311006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278085111047) 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, 139042655523 + 139042655524.

It is an arithmetic number, because the mean of its divisors is an integer number (139042655524).

Almost surely, 2^278085311047 is an apocalyptic number.

278085311047 is a deficient number, since it is larger than the sum of its proper divisors (1).

278085311047 is an equidigital number, since it uses as much as digits as its factorization.

278085311047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 278085311047 in words is "two hundred seventy-eight billion, eighty-five million, three hundred eleven thousand, forty-seven".