229501561669 has 2 divisors, whose sum is σ = 229501561670. Its totient is φ = 229501561668.

The previous prime is 229501561609. The next prime is 229501561741. The reversal of 229501561669 is 966165105922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222316965025 + 7184596644 = 471505^2 + 84762^2 .

It is a cyclic number.

It is not a de Polignac number, because 229501561669 - 2¹⁵ = 229501528901 is a prime.

It is a super-2 number, since 2×229501561669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229501561609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114750780834 + 114750780835.

It is an arithmetic number, because the mean of its divisors is an integer number (114750780835).

Almost surely, 2^229501561669 is an apocalyptic number.

It is an amenable number.

229501561669 is a deficient number, since it is larger than the sum of its proper divisors (1).

229501561669 is an equidigital number, since it uses as much as digits as its factorization.

229501561669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1749600, while the sum is 52.

The spelling of 229501561669 in words is "two hundred twenty-nine billion, five hundred one million, five hundred sixty-one thousand, six hundred sixty-nine".