624165122261 has 2 divisors, whose sum is σ = 624165122262. Its totient is φ = 624165122260.

The previous prime is 624165122227. The next prime is 624165122263. The reversal of 624165122261 is 162221561426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623911994161 + 253128100 = 789881^2 + 15910^2 .

It is a cyclic number.

It is not a de Polignac number, because 624165122261 - 2⁶ = 624165122197 is a prime.

Together with 624165122263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (624165122263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312082561130 + 312082561131.

It is an arithmetic number, because the mean of its divisors is an integer number (312082561131).

Almost surely, 2^624165122261 is an apocalyptic number.

It is an amenable number.

624165122261 is a deficient number, since it is larger than the sum of its proper divisors (1).

624165122261 is an equidigital number, since it uses as much as digits as its factorization.

624165122261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

Adding to 624165122261 its reverse (162221561426), we get a palindrome (786386683687).

The spelling of 624165122261 in words is "six hundred twenty-four billion, one hundred sixty-five million, one hundred twenty-two thousand, two hundred sixty-one".