280553328049 has 4 divisors (see below), whose sum is σ = 280770644080. Its totient is φ = 280336012020.

The previous prime is 280553328037. The next prime is 280553328127. The reversal of 280553328049 is 940823355082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 280553328049 - 2¹⁷ = 280553196977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 280553327993 and 280553328011.

It is not an unprimeable number, because it can be changed into a prime (280553320049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108656079 + ... + 108658660.

It is an arithmetic number, because the mean of its divisors is an integer number (70192661020).

Almost surely, 2^280553328049 is an apocalyptic number.

It is an amenable number.

280553328049 is a deficient number, since it is larger than the sum of its proper divisors (217316031).

280553328049 is a wasteful number, since it uses less digits than its factorization.

280553328049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217316030.

The product of its (nonzero) digits is 2073600, while the sum is 49.

The spelling of 280553328049 in words is "two hundred eighty billion, five hundred fifty-three million, three hundred twenty-eight thousand, forty-nine".