20202020019653 has 2 divisors, whose sum is σ = 20202020019654. Its totient is φ = 20202020019652.

The previous prime is 20202020019607. The next prime is 20202020019691. The reversal of 20202020019653 is 35691002020202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18563499697444 + 1638520322209 = 4308538^2 + 1280047^2 .

It is a cyclic number.

It is not a de Polignac number, because 20202020019653 - 2³⁴ = 20184840150469 is a prime.

It is a super-2 number, since 2×20202020019653² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20202020019953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101010009826 + 10101010009827.

It is an arithmetic number, because the mean of its divisors is an integer number (10101010009827).

Almost surely, 2^{20202020019653} is an apocalyptic number.

It is an amenable number.

20202020019653 is a deficient number, since it is larger than the sum of its proper divisors (1).

20202020019653 is an equidigital number, since it uses as much as digits as its factorization.

20202020019653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 20202020019653 its reverse (35691002020202), we get a palindrome (55893022039855).

The spelling of 20202020019653 in words is "twenty trillion, two hundred two billion, twenty million, nineteen thousand, six hundred fifty-three".