229712135652 has 240 divisors, whose sum is σ = 632542310400. Its totient is φ = 72596502720.

The previous prime is 229712135651. The next prime is 229712135669. The reversal of 229712135652 is 256531217922.

229712135652 is a `hidden beast` number, since 2 + 2 + 9 + 71 + 2 + 13 + 565 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 229712135598 and 229712135607.

It is not an unprimeable number, because it can be changed into a prime (229712135651) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 260149203 + ... + 260150085.

It is an arithmetic number, because the mean of its divisors is an integer number (2635592960).

Almost surely, 2^229712135652 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229712135652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316271155200).

229712135652 is an abundant number, since it is smaller than the sum of its proper divisors (402830174748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

229712135652 is a wasteful number, since it uses less digits than its factorization.

229712135652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1417 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The spelling of 229712135652 in words is "two hundred twenty-nine billion, seven hundred twelve million, one hundred thirty-five thousand, six hundred fifty-two".