280351229968 has 80 divisors (see below), whose sum is σ = 570511007280. Its totient is φ = 133285920768.

The previous prime is 280351229933. The next prime is 280351229987. The reversal of 280351229968 is 869922153082.

It can be written as a sum of positive squares in 8 ways, for example, as 13859881984 + 266491347984 = 117728^2 + 516228^2 .

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, 8214796 + ... + 8248852.

It is an arithmetic number, because the mean of its divisors is an integer number (7131387591).

Almost surely, 2^280351229968 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 280351229968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285255503640).

280351229968 is an abundant number, since it is smaller than the sum of its proper divisors (290159777312).

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

280351229968 is a wasteful number, since it uses less digits than its factorization.

280351229968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34364 (or 34358 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 55.

The spelling of 280351229968 in words is "two hundred eighty billion, three hundred fifty-one million, two hundred twenty-nine thousand, nine hundred sixty-eight".