229961343517 has 2 divisors, whose sum is σ = 229961343518. Its totient is φ = 229961343516.

The previous prime is 229961343487. The next prime is 229961343523. The reversal of 229961343517 is 715343169922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128116748356 + 101844595161 = 357934^2 + 319131^2 .

It is a cyclic number.

It is not a de Polignac number, because 229961343517 - 2⁷ = 229961343389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229961343617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114980671758 + 114980671759.

It is an arithmetic number, because the mean of its divisors is an integer number (114980671759).

Almost surely, 2^229961343517 is an apocalyptic number.

It is an amenable number.

229961343517 is a deficient number, since it is larger than the sum of its proper divisors (1).

229961343517 is an equidigital number, since it uses as much as digits as its factorization.

229961343517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 52.

The spelling of 229961343517 in words is "two hundred twenty-nine billion, nine hundred sixty-one million, three hundred forty-three thousand, five hundred seventeen".