229786640109 has 60 divisors (see below), whose sum is σ = 375215813856. Its totient is φ = 135255545568.

The previous prime is 229786640107. The next prime is 229786640119. The reversal of 229786640109 is 901046687922.

229786640109 is a `hidden beast` number, since 229 + 7 + 8 + 6 + 6 + 401 + 0 + 9 = 666.

It is not a de Polignac number, because 229786640109 - 2¹ = 229786640107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229786640101) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 5892694 + ... + 5931560.

Almost surely, 2^229786640109 is an apocalyptic number.

It is an amenable number.

229786640109 is a deficient number, since it is larger than the sum of its proper divisors (145429173747).

229786640109 is an equidigital number, since it uses as much as digits as its factorization.

229786640109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38948 (or 38906 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 229786640109 in words is "two hundred twenty-nine billion, seven hundred eighty-six million, six hundred forty thousand, one hundred nine".