228573918778 has 16 divisors (see below), whose sum is σ = 363190561344. Its totient is φ = 107516376000.

The previous prime is 228573918767. The next prime is 228573918779. The reversal of 228573918778 is 877819375822.

It is not an unprimeable number, because it can be changed into a prime (228573918779) 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, 1416750 + ... + 1569817.

It is an arithmetic number, because the mean of its divisors is an integer number (22699410084).

Almost surely, 2^228573918778 is an apocalyptic number.

228573918778 is a deficient number, since it is larger than the sum of its proper divisors (134616642566).

228573918778 is a wasteful number, since it uses less digits than its factorization.

228573918778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2988837.

The product of its digits is 94832640, while the sum is 67.

The spelling of 228573918778 in words is "two hundred twenty-eight billion, five hundred seventy-three million, nine hundred eighteen thousand, seven hundred seventy-eight".