279225655808 has 150 divisors (see below), whose sum is σ = 616888963845. Its totient is φ = 126263132160.

The previous prime is 279225655783. The next prime is 279225655823. The reversal of 279225655808 is 808556522972.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 259252052224 + 19973603584 = 509168^2 + 141328^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=373648.

It is a super-2 number, since 2×279225655808² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1446764960 + ... + 1446765152.

Almost surely, 2^279225655808 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 279225655808

279225655808 is an abundant number, since it is smaller than the sum of its proper divisors (337663308037).

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

279225655808 is an frugal number, since it uses more digits than its factorization.

279225655808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 24192000, while the sum is 59.

The spelling of 279225655808 in words is "two hundred seventy-nine billion, two hundred twenty-five million, six hundred fifty-five thousand, eight hundred eight".