279783048974280 has 256 divisors, whose sum is σ = 867297715200000. Its totient is φ = 72166792946688.

The previous prime is 279783048974279. The next prime is 279783048974311. The reversal of 279783048974280 is 82479840387972.

It is a junction number, because it is equal to n+sod(n) for n = 279783048974196 and 279783048974205.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 166395127 + ... + 168068153.

It is an arithmetic number, because the mean of its divisors is an integer number (3387881700000).

Almost surely, 2^{279783048974280} is an apocalyptic number.

279783048974280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 279783048974280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433648857600000).

279783048974280 is an abundant number, since it is smaller than the sum of its proper divisors (587514666225720).

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

279783048974280 is a wasteful number, since it uses less digits than its factorization.

279783048974280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673436 (or 1673432 counting only the distinct ones).

The product of its (nonzero) digits is 2731180032, while the sum is 78.

The spelling of 279783048974280 in words is "two hundred seventy-nine trillion, seven hundred eighty-three billion, forty-eight million, nine hundred seventy-four thousand, two hundred eighty".