4278255387155 has 8 divisors (see below), whose sum is σ = 5243138517312. Its totient is φ = 3349782941248.

The previous prime is 4278255387143. The next prime is 4278255387169. The reversal of 4278255387155 is 5517835528724.

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 4278255387155 - 2¹⁰ = 4278255386131 is a prime.

It is a Duffinian 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 in 7 ways as a sum of consecutive naturals, for example, 9102670802 + ... + 9102671271.

It is an arithmetic number, because the mean of its divisors is an integer number (655392314664).

Almost surely, 2^{4278255387155} is an apocalyptic number.

4278255387155 is a deficient number, since it is larger than the sum of its proper divisors (964883130157).

4278255387155 is a wasteful number, since it uses less digits than its factorization.

4278255387155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18205342125.

The product of its digits is 94080000, while the sum is 62.

The spelling of 4278255387155 in words is "four trillion, two hundred seventy-eight billion, two hundred fifty-five million, three hundred eighty-seven thousand, one hundred fifty-five".