78836378226 has 16 divisors (see below), whose sum is σ = 158553612000. Its totient is φ = 26131983488.

The previous prime is 78836378219. The next prime is 78836378261. The reversal of 78836378226 is 62287363887.

It is a self number, because there is not a number n which added to its sum of digits gives 78836378226.

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 7 ways as a sum of consecutive naturals, for example, 36701151 + ... + 36703298.

It is an arithmetic number, because the mean of its divisors is an integer number (9909600750).

Almost surely, 2^78836378226 is an apocalyptic number.

78836378226 is an abundant number, since it is smaller than the sum of its proper divisors (79717233774).

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

78836378226 is a wasteful number, since it uses less digits than its factorization.

78836378226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73404633.

The product of its digits is 32514048, while the sum is 60.

The spelling of 78836378226 in words is "seventy-eight billion, eight hundred thirty-six million, three hundred seventy-eight thousand, two hundred twenty-six".