201020019969673 has 2 divisors, whose sum is σ = 201020019969674. Its totient is φ = 201020019969672.

The previous prime is 201020019969623. The next prime is 201020019969721. The reversal of 201020019969673 is 376969910020102.

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., 139147196668489 + 61872823301184 = 11796067^2 + 7865928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020019969673 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020019969623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510009984836 + 100510009984837.

It is an arithmetic number, because the mean of its divisors is an integer number (100510009984837).

Almost surely, 2^{201020019969673} is an apocalyptic number.

It is an amenable number.

201020019969673 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020019969673 is an equidigital number, since it uses as much as digits as its factorization.

201020019969673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2204496, while the sum is 55.

Adding to 201020019969673 its reverse (376969910020102), we get a palindrome (577989929989775).

The spelling of 201020019969673 in words is "two hundred one trillion, twenty billion, nineteen million, nine hundred sixty-nine thousand, six hundred seventy-three".