20333555035081 has 2 divisors, whose sum is σ = 20333555035082. Its totient is φ = 20333555035080.

The previous prime is 20333555035049. The next prime is 20333555035097. The reversal of 20333555035081 is 18053055533302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15150123843856 + 5183431191225 = 3892316^2 + 2276715^2 .

It is a cyclic number.

It is not a de Polignac number, because 20333555035081 - 2⁵ = 20333555035049 is a prime.

It is a super-2 number, since 2×20333555035081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20333555032081) 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, 10166777517540 + 10166777517541.

It is an arithmetic number, because the mean of its divisors is an integer number (10166777517541).

Almost surely, 2^{20333555035081} is an apocalyptic number.

It is an amenable number.

20333555035081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20333555035081 is an equidigital number, since it uses as much as digits as its factorization.

20333555035081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810000, while the sum is 43.

The spelling of 20333555035081 in words is "twenty trillion, three hundred thirty-three billion, five hundred fifty-five million, thirty-five thousand, eighty-one".