278860839463 has 2 divisors, whose sum is σ = 278860839464. Its totient is φ = 278860839462.

The previous prime is 278860839457. The next prime is 278860839503. The reversal of 278860839463 is 364938068872.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 278860839463 - 2²¹ = 278858742311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 278860839395 and 278860839404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (278860839563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139430419731 + 139430419732.

It is an arithmetic number, because the mean of its divisors is an integer number (139430419732).

Almost surely, 2^278860839463 is an apocalyptic number.

278860839463 is a deficient number, since it is larger than the sum of its proper divisors (1).

278860839463 is an equidigital number, since it uses as much as digits as its factorization.

278860839463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 83607552, while the sum is 64.

The spelling of 278860839463 in words is "two hundred seventy-eight billion, eight hundred sixty million, eight hundred thirty-nine thousand, four hundred sixty-three".