279285421115 has 4 divisors (see below), whose sum is σ = 335142505344. Its totient is φ = 223428336888.

The previous prime is 279285421067. The next prime is 279285421169. The reversal of 279285421115 is 511124582972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 279285421115 - 2³⁸ = 4407514171 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 279285421115.

It is an unprimeable number.

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, 27928542107 + ... + 27928542116.

It is an arithmetic number, because the mean of its divisors is an integer number (83785626336).

Almost surely, 2^279285421115 is an apocalyptic number.

279285421115 is a deficient number, since it is larger than the sum of its proper divisors (55857084229).

279285421115 is an equidigital number, since it uses as much as digits as its factorization.

279285421115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55857084228.

The product of its digits is 403200, while the sum is 47.

The spelling of 279285421115 in words is "two hundred seventy-nine billion, two hundred eighty-five million, four hundred twenty-one thousand, one hundred fifteen".