280253611968 has 112 divisors (see below), whose sum is σ = 809426392320. Its totient is φ = 84871526400.

The previous prime is 280253611961. The next prime is 280253611997. The reversal of 280253611968 is 869116352082.

280253611968 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×280253611968² (a number of 24 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 280253611968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280253611961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3356973 + ... + 3439443.

It is an arithmetic number, because the mean of its divisors is an integer number (7227021360).

Almost surely, 2^280253611968 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 280253611968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404713196160).

280253611968 is an abundant number, since it is smaller than the sum of its proper divisors (529172780352).

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

280253611968 is a wasteful number, since it uses less digits than its factorization.

280253611968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84106 (or 84096 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 280253611968 in words is "two hundred eighty billion, two hundred fifty-three million, six hundred eleven thousand, nine hundred sixty-eight".