280307068044 has 72 divisors (see below), whose sum is σ = 683955531840. Its totient is φ = 89342897952.

The previous prime is 280307068033. The next prime is 280307068079. The reversal of 280307068044 is 440860703082.

It is a junction number, because it is equal to n+sod(n) for n = 280307067987 and 280307068005.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25507119 + ... + 25518105.

Almost surely, 2^280307068044 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 280307068044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (341977765920).

280307068044 is an abundant number, since it is smaller than the sum of its proper divisors (403648463796).

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

280307068044 is a wasteful number, since it uses less digits than its factorization.

280307068044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15059 (or 15034 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 42.

The spelling of 280307068044 in words is "two hundred eighty billion, three hundred seven million, sixty-eight thousand, forty-four".