229679505561 has 32 divisors (see below), whose sum is σ = 334894602240. Its totient is φ = 138860308800.

The previous prime is 229679505493. The next prime is 229679505569. The reversal of 229679505561 is 165505976922.

It is a happy number.

It is not a de Polignac number, because 229679505561 - 2¹⁴ = 229679489177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (229679505569) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45397650 + ... + 45402708.

It is an arithmetic number, because the mean of its divisors is an integer number (10465456320).

Almost surely, 2^229679505561 is an apocalyptic number.

It is an amenable number.

229679505561 is a deficient number, since it is larger than the sum of its proper divisors (105215096679).

229679505561 is a wasteful number, since it uses less digits than its factorization.

229679505561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8157.

The product of its (nonzero) digits is 10206000, while the sum is 57.

The spelling of 229679505561 in words is "two hundred twenty-nine billion, six hundred seventy-nine million, five hundred five thousand, five hundred sixty-one".