280055275028 has 6 divisors (see below), whose sum is σ = 490096731306. Its totient is φ = 140027637512.

The previous prime is 280055274979. The next prime is 280055275069. The reversal of 280055275028 is 820572550082.

It can be written as a sum of positive squares in only one way, i.e., 162233339524 + 117821935504 = 402782^2 + 343252^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 280055275028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35006909375 + ... + 35006909382.

It is an arithmetic number, because the mean of its divisors is an integer number (81682788551).

Almost surely, 2^280055275028 is an apocalyptic number.

It is an amenable number.

280055275028 is a deficient number, since it is larger than the sum of its proper divisors (210041456278).

280055275028 is a wasteful number, since it uses less digits than its factorization.

280055275028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70013818761 (or 70013818759 counting only the distinct ones).

The product of its (nonzero) digits is 448000, while the sum is 44.

The spelling of 280055275028 in words is "two hundred eighty billion, fifty-five million, two hundred seventy-five thousand, twenty-eight".