620202190961 has 2 divisors, whose sum is σ = 620202190962. Its totient is φ = 620202190960.

The previous prime is 620202190939. The next prime is 620202191003. The reversal of 620202190961 is 169091202026.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424802829361 + 195399361600 = 651769^2 + 442040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-620202190961 is a prime.

It is not a weakly prime, because it can be changed into another prime (620202190901) 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, 310101095480 + 310101095481.

It is an arithmetic number, because the mean of its divisors is an integer number (310101095481).

Almost surely, 2^620202190961 is an apocalyptic number.

It is an amenable number.

620202190961 is a deficient number, since it is larger than the sum of its proper divisors (1).

620202190961 is an equidigital number, since it uses as much as digits as its factorization.

620202190961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

Adding to 620202190961 its reverse (169091202026), we get a palindrome (789293392987).

The spelling of 620202190961 in words is "six hundred twenty billion, two hundred two million, one hundred ninety thousand, nine hundred sixty-one".