278275575505 has 16 divisors (see below), whose sum is σ = 338551605504. Its totient is φ = 219540689280.

The previous prime is 278275575469. The next prime is 278275575511. The reversal of 278275575505 is 505575572872.

It is not a de Polignac number, because 278275575505 - 2¹⁵ = 278275542737 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 278275575505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2823000 + ... + 2919910.

It is an arithmetic number, because the mean of its divisors is an integer number (21159475344).

Almost surely, 2^278275575505 is an apocalyptic number.

It is an amenable number.

278275575505 is a deficient number, since it is larger than the sum of its proper divisors (60276029999).

278275575505 is an equidigital number, since it uses as much as digits as its factorization.

278275575505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104856.

The product of its (nonzero) digits is 34300000, while the sum is 58.

The spelling of 278275575505 in words is "two hundred seventy-eight billion, two hundred seventy-five million, five hundred seventy-five thousand, five hundred five".