278053055503 has 4 divisors (see below), whose sum is σ = 278054118160. Its totient is φ = 278051992848.

The previous prime is 278053055491. The next prime is 278053055519. The reversal of 278053055503 is 305550350872.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 278053055503 - 2¹⁷ = 278052924431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 278053055503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278053055303) 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 in 3 ways as a sum of consecutive naturals, for example, 167803 + ... + 764371.

It is an arithmetic number, because the mean of its divisors is an integer number (69513529540).

Almost surely, 2^278053055503 is an apocalyptic number.

278053055503 is a deficient number, since it is larger than the sum of its proper divisors (1062657).

278053055503 is an equidigital number, since it uses as much as digits as its factorization.

278053055503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062656.

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 278053055503 in words is "two hundred seventy-eight billion, fifty-three million, fifty-five thousand, five hundred three".