228516623849 has 16 divisors (see below), whose sum is σ = 237080094720. Its totient is φ = 219999447360.

The previous prime is 228516623843. The next prime is 228516623861. The reversal of 228516623849 is 948326615822.

It is a de Polignac number, because none of the positive numbers 2^k-228516623849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228516623794 and 228516623803.

It is not an unprimeable number, because it can be changed into a prime (228516623843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21034679 + ... + 21045539.

It is an arithmetic number, because the mean of its divisors is an integer number (14817505920).

Almost surely, 2^228516623849 is an apocalyptic number.

228516623849 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

228516623849 is a deficient number, since it is larger than the sum of its proper divisors (8563470871).

228516623849 is a wasteful number, since it uses less digits than its factorization.

228516623849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12920.

The product of its digits is 9953280, while the sum is 56.

The spelling of 228516623849 in words is "two hundred twenty-eight billion, five hundred sixteen million, six hundred twenty-three thousand, eight hundred forty-nine".