278770847547 has 16 divisors (see below), whose sum is σ = 384654327552. Its totient is φ = 179443985760.

The previous prime is 278770847497. The next prime is 278770847603. The reversal of 278770847547 is 745748077872.

It is not a de Polignac number, because 278770847547 - 2⁷ = 278770847419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (278770847347) 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 15 ways as a sum of consecutive naturals, for example, 9571143 + ... + 9600224.

It is an arithmetic number, because the mean of its divisors is an integer number (24040895472).

Almost surely, 2^278770847547 is an apocalyptic number.

278770847547 is a deficient number, since it is larger than the sum of its proper divisors (105883480005).

278770847547 is a wasteful number, since it uses less digits than its factorization.

278770847547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19171538.

The product of its (nonzero) digits is 172103680, while the sum is 66.

The spelling of 278770847547 in words is "two hundred seventy-eight billion, seven hundred seventy million, eight hundred forty-seven thousand, five hundred forty-seven".