280005052506 has 16 divisors (see below), whose sum is σ = 560018130048. Its totient is φ = 93333680000.

The previous prime is 280005052493. The next prime is 280005052549. The reversal of 280005052506 is 605250500082.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180106 + ... + 769706.

It is an arithmetic number, because the mean of its divisors is an integer number (35001133128).

Almost surely, 2^280005052506 is an apocalyptic number.

280005052506 is an abundant number, since it is smaller than the sum of its proper divisors (280013077542).

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

280005052506 is a wasteful number, since it uses less digits than its factorization.

280005052506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668757.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 280005052506 its reverse (605250500082), we get a palindrome (885255552588).

The spelling of 280005052506 in words is "two hundred eighty billion, five million, fifty-two thousand, five hundred six".