280253531712 has 672 divisors, whose sum is σ = 969963918336. Its totient is φ = 69357772800.

The previous prime is 280253531707. The next prime is 280253531741. The reversal of 280253531712 is 217135352082.

It is a tau number, because it is divible by the number of its divisors (672).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1234596943 + ... + 1234597169.

It is an arithmetic number, because the mean of its divisors is an integer number (1443398688).

Almost surely, 2^280253531712 is an apocalyptic number.

280253531712 is a gapful number since it is divisible by the number (22) 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 280253531712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (484981959168).

280253531712 is an abundant number, since it is smaller than the sum of its proper divisors (689710386624).

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

280253531712 is a wasteful number, since it uses less digits than its factorization.

280253531712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

Adding to 280253531712 its reverse (217135352082), we get a palindrome (497388883794).

The spelling of 280253531712 in words is "two hundred eighty billion, two hundred fifty-three million, five hundred thirty-one thousand, seven hundred twelve".