278030027797 has 2 divisors, whose sum is σ = 278030027798. Its totient is φ = 278030027796.

The previous prime is 278030027777. The next prime is 278030027819. The reversal of 278030027797 is 797720030872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273948606801 + 4081420996 = 523401^2 + 63886^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-278030027797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278030027777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139015013898 + 139015013899.

It is an arithmetic number, because the mean of its divisors is an integer number (139015013899).

Almost surely, 2^278030027797 is an apocalyptic number.

It is an amenable number.

278030027797 is a deficient number, since it is larger than the sum of its proper divisors (1).

278030027797 is an equidigital number, since it uses as much as digits as its factorization.

278030027797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2074464, while the sum is 52.

The spelling of 278030027797 in words is "two hundred seventy-eight billion, thirty million, twenty-seven thousand, seven hundred ninety-seven".