279561036047 has 4 divisors (see below), whose sum is σ = 288579134016. Its totient is φ = 270542938080.

The previous prime is 279561036043. The next prime is 279561036071. The reversal of 279561036047 is 740630165972.

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 279561036047 - 2² = 279561036043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 279561035986 and 279561036004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279561036043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4509048938 + ... + 4509048999.

It is an arithmetic number, because the mean of its divisors is an integer number (72144783504).

Almost surely, 2^279561036047 is an apocalyptic number.

279561036047 is a deficient number, since it is larger than the sum of its proper divisors (9018097969).

279561036047 is an equidigital number, since it uses as much as digits as its factorization.

279561036047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9018097968.

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 279561036047 in words is "two hundred seventy-nine billion, five hundred sixty-one million, thirty-six thousand, forty-seven".