4078226778186 has 32 divisors (see below), whose sum is σ = 8898316440768. Its totient is φ = 1235775309440.

The previous prime is 4078226778163. The next prime is 4078226778211. The reversal of 4078226778186 is 6818776228704.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 352780 + ... + 2877656.

It is an arithmetic number, because the mean of its divisors is an integer number (278072388774).

Almost surely, 2^{4078226778186} is an apocalyptic number.

4078226778186 is an abundant number, since it is smaller than the sum of its proper divisors (4820089662582).

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

4078226778186 is a wasteful number, since it uses less digits than its factorization.

4078226778186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549366.

The product of its (nonzero) digits is 101154816, while the sum is 66.

The spelling of 4078226778186 in words is "four trillion, seventy-eight billion, two hundred twenty-six million, seven hundred seventy-eight thousand, one hundred eighty-six".