280052805500 has 48 divisors (see below), whose sum is σ = 658684213824. Its totient is φ = 103404110400.

The previous prime is 280052805493. The next prime is 280052805509. The reversal of 280052805500 is 5508250082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280052805509) 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, 21536024 + ... + 21549023.

It is an arithmetic number, because the mean of its divisors is an integer number (13722587788).

Almost surely, 2^280052805500 is an apocalyptic number.

280052805500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

280052805500 is an abundant number, since it is smaller than the sum of its proper divisors (378631408324).

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

280052805500 is a wasteful number, since it uses less digits than its factorization.

280052805500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43085079 (or 43085067 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 35.

The spelling of 280052805500 in words is "two hundred eighty billion, fifty-two million, eight hundred five thousand, five hundred".