278431426283 has 2 divisors, whose sum is σ = 278431426284. Its totient is φ = 278431426282.

The previous prime is 278431426219. The next prime is 278431426297. The reversal of 278431426283 is 382624134872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 278431426283 - 2⁶ = 278431426219 is a prime.

It is not a weakly prime, because it can be changed into another prime (278431420283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139215713141 + 139215713142.

It is an arithmetic number, because the mean of its divisors is an integer number (139215713142).

Almost surely, 2^278431426283 is an apocalyptic number.

278431426283 is a deficient number, since it is larger than the sum of its proper divisors (1).

278431426283 is an equidigital number, since it uses as much as digits as its factorization.

278431426283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 50.

The spelling of 278431426283 in words is "two hundred seventy-eight billion, four hundred thirty-one million, four hundred twenty-six thousand, two hundred eighty-three".