278255028255 has 16 divisors (see below), whose sum is σ = 451478582784. Its totient is φ = 146312502560.

The previous prime is 278255028223. The next prime is 278255028257. The reversal of 278255028255 is 552820552872.

It is a happy number.

It is not a de Polignac number, because 278255028255 - 2⁵ = 278255028223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 278255028198 and 278255028207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278255028257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130635099 + ... + 130637228.

It is an arithmetic number, because the mean of its divisors is an integer number (28217411424).

Almost surely, 2^278255028255 is an apocalyptic number.

278255028255 is a deficient number, since it is larger than the sum of its proper divisors (173223554529).

278255028255 is a wasteful number, since it uses less digits than its factorization.

278255028255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261272406.

The product of its (nonzero) digits is 4480000, while the sum is 51.

The spelling of 278255028255 in words is "two hundred seventy-eight billion, two hundred fifty-five million, twenty-eight thousand, two hundred fifty-five".