280255005506 has 16 divisors (see below), whose sum is σ = 483384623424. Its totient is φ = 119372420304.

The previous prime is 280255005487. The next prime is 280255005509. The reversal of 280255005506 is 605500552082.

It is a happy number.

280255005506 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 2×280255005506² (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 280255005506.

It is not an unprimeable number, because it can be changed into a prime (280255005509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61403285 + ... + 61407848.

It is an arithmetic number, because the mean of its divisors is an integer number (30211538964).

Almost surely, 2^280255005506 is an apocalyptic number.

280255005506 is a deficient number, since it is larger than the sum of its proper divisors (203129617918).

280255005506 is a wasteful number, since it uses less digits than its factorization.

280255005506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122811305.

The product of its (nonzero) digits is 120000, while the sum is 38.

Adding to 280255005506 its reverse (605500552082), we get a palindrome (885755557588).

The spelling of 280255005506 in words is "two hundred eighty billion, two hundred fifty-five million, five thousand, five hundred six".