229364387261 has 2 divisors, whose sum is σ = 229364387262. Its totient is φ = 229364387260.

The previous prime is 229364387183. The next prime is 229364387267. The reversal of 229364387261 is 162783463922.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202671036100 + 26693351161 = 450190^2 + 163381^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-229364387261 is a prime.

It is a super-2 number, since 2×229364387261² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229364387267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114682193630 + 114682193631.

It is an arithmetic number, because the mean of its divisors is an integer number (114682193631).

Almost surely, 2^229364387261 is an apocalyptic number.

It is an amenable number.

229364387261 is a deficient number, since it is larger than the sum of its proper divisors (1).

229364387261 is an equidigital number, since it uses as much as digits as its factorization.

229364387261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 53.

The spelling of 229364387261 in words is "two hundred twenty-nine billion, three hundred sixty-four million, three hundred eighty-seven thousand, two hundred sixty-one".