279945084021 has 8 divisors (see below), whose sum is σ = 373480071744. Its totient is φ = 186520076160.

The previous prime is 279945084017. The next prime is 279945084059. The reversal of 279945084021 is 120480549972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 279945084021 - 2² = 279945084017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (279945084091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27489025 + ... + 27499206.

It is an arithmetic number, because the mean of its divisors is an integer number (46685008968).

Almost surely, 2^279945084021 is an apocalyptic number.

It is an amenable number.

279945084021 is a deficient number, since it is larger than the sum of its proper divisors (93534987723).

279945084021 is a wasteful number, since it uses less digits than its factorization.

279945084021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54989931.

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 279945084021 in words is "two hundred seventy-nine billion, nine hundred forty-five million, eighty-four thousand, twenty-one".