1280210052278 has 4 divisors (see below), whose sum is σ = 1920315078420. Its totient is φ = 640105026138.

The previous prime is 1280210052269. The next prime is 1280210052301. The reversal of 1280210052278 is 8722500120821.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 320052513068 + ... + 320052513071.

It is an arithmetic number, because the mean of its divisors is an integer number (480078769605).

Almost surely, 2^{1280210052278} is an apocalyptic number.

1280210052278 is a deficient number, since it is larger than the sum of its proper divisors (640105026142).

1280210052278 is an equidigital number, since it uses as much as digits as its factorization.

1280210052278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640105026141.

The product of its (nonzero) digits is 35840, while the sum is 38.

The spelling of 1280210052278 in words is "one trillion, two hundred eighty billion, two hundred ten million, fifty-two thousand, two hundred seventy-eight".