20551433250941 has 2 divisors, whose sum is σ = 20551433250942. Its totient is φ = 20551433250940.

The previous prime is 20551433250911. The next prime is 20551433250949. The reversal of 20551433250941 is 14905233415502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12341941872100 + 8209491378841 = 3513110^2 + 2865221^2 .

It is a cyclic number.

It is not a de Polignac number, because 20551433250941 - 2¹⁰ = 20551433249917 is a prime.

It is a super-2 number, since 2×20551433250941² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20551433250892 and 20551433250901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20551433250949) 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, 10275716625470 + 10275716625471.

It is an arithmetic number, because the mean of its divisors is an integer number (10275716625471).

Almost surely, 2^{20551433250941} is an apocalyptic number.

It is an amenable number.

20551433250941 is a deficient number, since it is larger than the sum of its proper divisors (1).

20551433250941 is an equidigital number, since it uses as much as digits as its factorization.

20551433250941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 20551433250941 in words is "twenty trillion, five hundred fifty-one billion, four hundred thirty-three million, two hundred fifty thousand, nine hundred forty-one".