279475056216 has 448 divisors, whose sum is σ = 843495206400. Its totient is φ = 86608279296.

The previous prime is 279475056199. The next prime is 279475056221. The reversal of 279475056216 is 612650574972.

It is a happy number.

279475056216 is a `hidden beast` number, since 2 + 7 + 9 + 4 + 7 + 5 + 0 + 5 + 621 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 603617601 + ... + 603618063.

It is an arithmetic number, because the mean of its divisors is an integer number (1882801800).

Almost surely, 2^279475056216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 279475056216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421747603200).

279475056216 is an abundant number, since it is smaller than the sum of its proper divisors (564020150184).

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

279475056216 is a wasteful number, since it uses less digits than its factorization.

279475056216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 623 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 279475056216 in words is "two hundred seventy-nine billion, four hundred seventy-five million, fifty-six thousand, two hundred sixteen".