620424161641 has 2 divisors, whose sum is σ = 620424161642. Its totient is φ = 620424161640.

The previous prime is 620424161633. The next prime is 620424161647. The reversal of 620424161641 is 146161424026.

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., 417477515625 + 202946646016 = 646125^2 + 450496^2 .

It is a cyclic number.

It is not a de Polignac number, because 620424161641 - 2³ = 620424161633 is a prime.

It is a super-2 number, since 2×620424161641² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 620424161641.

It is not a weakly prime, because it can be changed into another prime (620424161647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310212080820 + 310212080821.

It is an arithmetic number, because the mean of its divisors is an integer number (310212080821).

Almost surely, 2^620424161641 is an apocalyptic number.

It is an amenable number.

620424161641 is a deficient number, since it is larger than the sum of its proper divisors (1).

620424161641 is an equidigital number, since it uses as much as digits as its factorization.

620424161641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

Adding to 620424161641 its reverse (146161424026), we get a palindrome (766585585667).

The spelling of 620424161641 in words is "six hundred twenty billion, four hundred twenty-four million, one hundred sixty-one thousand, six hundred forty-one".