280599855943680 has 6240 divisors, whose sum is σ = 1370940990531840. Its totient is φ = 52438656614400.

The previous prime is 280599855943597. The next prime is 280599855943721. The reversal of 280599855943680 is 86349558995082.

280599855943680 is a `hidden beast` number, since 2 + 8 + 0 + 5 + 99 + 85 + 5 + 94 + 368 + 0 = 666.

280599855943680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (6240).

It is a super-2 number, since 2×280599855943680² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 280599855943680.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 1858277191605 + ... + 1858277191755.

It is an arithmetic number, because the mean of its divisors is an integer number (219702081816).

Almost surely, 2^{280599855943680} is an apocalyptic number.

280599855943680 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 280599855943680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685470495265920).

280599855943680 is an abundant number, since it is smaller than the sum of its proper divisors (1090341134588160).

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

280599855943680 is a wasteful number, since it uses less digits than its factorization.

280599855943680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 6718464000, while the sum is 81.

The spelling of 280599855943680 in words is "two hundred eighty trillion, five hundred ninety-nine billion, eight hundred fifty-five million, nine hundred forty-three thousand, six hundred eighty".