278055030280 has 16 divisors (see below), whose sum is σ = 625623818220. Its totient is φ = 111222012096.

The previous prime is 278055030271. The next prime is 278055030299. The reversal of 278055030280 is 82030550872.

It can be written as a sum of positive squares in 2 ways, for example, as 265313587396 + 12741442884 = 515086^2 + 112878^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 6951375757 = 278055030280 / (2 + 7 + 8 + 0 + 5 + 5 + 0 + 3 + 0 + 2 + 8 + 0).

It is an unprimeable number.

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, 3475687839 + ... + 3475687918.

Almost surely, 2^278055030280 is an apocalyptic number.

278055030280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278055030280 is an abundant number, since it is smaller than the sum of its proper divisors (347568787940).

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

278055030280 is a wasteful number, since it uses less digits than its factorization.

278055030280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6951375768 (or 6951375764 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 40.

The spelling of 278055030280 in words is "two hundred seventy-eight billion, fifty-five million, thirty thousand, two hundred eighty".