279874409920 has 112 divisors (see below), whose sum is σ = 780235501248. Its totient is φ = 93616496640.

The previous prime is 279874409891. The next prime is 279874409981. The reversal of 279874409920 is 29904478972.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

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, 1431867 + ... + 1615546.

It is an arithmetic number, because the mean of its divisors is an integer number (6966388404).

Almost surely, 2^279874409920 is an apocalyptic number.

279874409920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

279874409920 is an abundant number, since it is smaller than the sum of its proper divisors (500361091328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

279874409920 is a wasteful number, since it uses less digits than its factorization.

279874409920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047478 (or 3047468 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 279874409920 in words is "two hundred seventy-nine billion, eight hundred seventy-four million, four hundred nine thousand, nine hundred twenty".