280055121884 has 12 divisors (see below), whose sum is σ = 490376051424. Its totient is φ = 139947678624.

The previous prime is 280055121877. The next prime is 280055121887. The reversal of 280055121884 is 488121550082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (280055121887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19962692 + ... + 19976715.

It is an arithmetic number, because the mean of its divisors is an integer number (40864670952).

Almost surely, 2^280055121884 is an apocalyptic number.

It is an amenable number.

280055121884 is a deficient number, since it is larger than the sum of its proper divisors (210320929540).

280055121884 is a wasteful number, since it uses less digits than its factorization.

280055121884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39941164 (or 39941162 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 44.

The spelling of 280055121884 in words is "two hundred eighty billion, fifty-five million, one hundred twenty-one thousand, eight hundred eighty-four".