278623053419 has 2 divisors, whose sum is σ = 278623053420. Its totient is φ = 278623053418.

The previous prime is 278623053407. The next prime is 278623053421. The reversal of 278623053419 is 914350326872.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 278623053419 - 2⁴ = 278623053403 is a prime.

It is a super-2 number, since 2×278623053419² (a number of 24 digits) contains 22 as substring.

Together with 278623053421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (278623053719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 139311526709 + 139311526710.

It is an arithmetic number, because the mean of its divisors is an integer number (139311526710).

It is a 1-persistent number, because it is pandigital, but 2⋅278623053419 = 557246106838 is not.

Almost surely, 2^278623053419 is an apocalyptic number.

278623053419 is a deficient number, since it is larger than the sum of its proper divisors (1).

278623053419 is an equidigital number, since it uses as much as digits as its factorization.

278623053419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 278623053419 in words is "two hundred seventy-eight billion, six hundred twenty-three million, fifty-three thousand, four hundred nineteen".