278775276840023 has 24 divisors (see below), whose sum is σ = 283391015080800. Its totient is φ = 274229512496640.

The previous prime is 278775276839993. The next prime is 278775276840037. The reversal of 278775276840023 is 320048672577872.

It is not a de Polignac number, because 278775276840023 - 2¹⁰ = 278775276838999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278775270840023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15976567403 + ... + 15976584851.

It is an arithmetic number, because the mean of its divisors is an integer number (11807958961700).

Almost surely, 2^{278775276840023} is an apocalyptic number.

278775276840023 is a deficient number, since it is larger than the sum of its proper divisors (4615738240777).

278775276840023 is an equidigital number, since it uses as much as digits as its factorization.

278775276840023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27479 (or 27396 counting only the distinct ones).

The product of its (nonzero) digits is 442552320, while the sum is 68.

The spelling of 278775276840023 in words is "two hundred seventy-eight trillion, seven hundred seventy-five billion, two hundred seventy-six million, eight hundred forty thousand, twenty-three".