4278078816023 has 4 divisors (see below), whose sum is σ = 4278214371360. Its totient is φ = 4277943260688.

The previous prime is 4278078815953. The next prime is 4278078816059. The reversal of 4278078816023 is 3206188708724.

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

It is a cyclic number.

It is not a de Polignac number, because 4278078816023 - 2²⁸ = 4277810380567 is a prime.

It is a super-2 number, since 2×4278078816023² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4278078816023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278078816073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67730318 + ... + 67793451.

It is an arithmetic number, because the mean of its divisors is an integer number (1069553592840).

Almost surely, 2^{4278078816023} is an apocalyptic number.

4278078816023 is a deficient number, since it is larger than the sum of its proper divisors (135555337).

4278078816023 is a wasteful number, since it uses less digits than its factorization.

4278078816023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135555336.

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 4278078816023 in words is "four trillion, two hundred seventy-eight billion, seventy-eight million, eight hundred sixteen thousand, twenty-three".