228686357678 has 4 divisors (see below), whose sum is σ = 343029536520. Its totient is φ = 114343178838.

The previous prime is 228686357677. The next prime is 228686357761. The reversal of 228686357678 is 876753686822.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228686357677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57171589418 + ... + 57171589421.

It is an arithmetic number, because the mean of its divisors is an integer number (85757384130).

Almost surely, 2^228686357678 is an apocalyptic number.

228686357678 is a deficient number, since it is larger than the sum of its proper divisors (114343178842).

228686357678 is a wasteful number, since it uses less digits than its factorization.

228686357678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114343178841.

The product of its digits is 325140480, while the sum is 68.

The spelling of 228686357678 in words is "two hundred twenty-eight billion, six hundred eighty-six million, three hundred fifty-seven thousand, six hundred seventy-eight".