278055392280 has 64 divisors (see below), whose sum is σ = 834254899200. Its totient is φ = 74140218240.

The previous prime is 278055392269. The next prime is 278055392291. The reversal of 278055392280 is 82293550872.

It is a happy number.

278055392280 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (278055392269) and next prime (278055392291).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056591 + ... + 1293249.

It is an arithmetic number, because the mean of its divisors is an integer number (13035232800).

Almost surely, 2^278055392280 is an apocalyptic number.

278055392280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

278055392280 is an abundant number, since it is smaller than the sum of its proper divisors (556199506920).

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

278055392280 is a wasteful number, since it uses less digits than its factorization.

278055392280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246464 (or 246460 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 278055392280 in words is "two hundred seventy-eight billion, fifty-five million, three hundred ninety-two thousand, two hundred eighty".