616644450241 has 2 divisors, whose sum is σ = 616644450242. Its totient is φ = 616644450240.

The previous prime is 616644450223. The next prime is 616644450271. The reversal of 616644450241 is 142054446616.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 590684473600 + 25959976641 = 768560^2 + 161121^2 .

It is a cyclic number.

It is not a de Polignac number, because 616644450241 - 2²³ = 616636061633 is a prime.

It is not a weakly prime, because it can be changed into another prime (616644450271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308322225120 + 308322225121.

It is an arithmetic number, because the mean of its divisors is an integer number (308322225121).

Almost surely, 2^616644450241 is an apocalyptic number.

It is an amenable number.

616644450241 is a deficient number, since it is larger than the sum of its proper divisors (1).

616644450241 is an equidigital number, since it uses as much as digits as its factorization.

616644450241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 43.

Adding to 616644450241 its reverse (142054446616), we get a palindrome (758698896857).

The spelling of 616644450241 in words is "six hundred sixteen billion, six hundred forty-four million, four hundred fifty thousand, two hundred forty-one".