278782263953 has 8 divisors (see below), whose sum is σ = 281270102400. Its totient is φ = 276294789568.

The previous prime is 278782263923. The next prime is 278782263959. The reversal of 278782263953 is 359362287872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 278782263953 - 2¹² = 278782259857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278782263959) 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 7 ways as a sum of consecutive naturals, for example, 1584188 + ... + 1751346.

It is an arithmetic number, because the mean of its divisors is an integer number (35158762800).

Almost surely, 2^278782263953 is an apocalyptic number.

It is an amenable number.

278782263953 is a deficient number, since it is larger than the sum of its proper divisors (2487838447).

278782263953 is a wasteful number, since it uses less digits than its factorization.

278782263953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182031.

The product of its digits is 60963840, while the sum is 62.

The spelling of 278782263953 in words is "two hundred seventy-eight billion, seven hundred eighty-two million, two hundred sixty-three thousand, nine hundred fifty-three".