228116040509 has 8 divisors (see below), whose sum is σ = 264375934848. Its totient is φ = 192774118320.

The previous prime is 228116040473. The next prime is 228116040511. The reversal of 228116040509 is 905040611822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-228116040509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228116040539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229492502 + ... + 229493495.

It is an arithmetic number, because the mean of its divisors is an integer number (33046991856).

Almost surely, 2^228116040509 is an apocalyptic number.

It is an amenable number.

228116040509 is a deficient number, since it is larger than the sum of its proper divisors (36259894339).

228116040509 is an equidigital number, since it uses as much as digits as its factorization.

228116040509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458986075.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 228116040509 in words is "two hundred twenty-eight billion, one hundred sixteen million, forty thousand, five hundred nine".