20763541853 has 2 divisors, whose sum is σ = 20763541854. Its totient is φ = 20763541852.

The previous prime is 20763541837. The next prime is 20763541871. The reversal of 20763541853 is 35814536702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12655800004 + 8107741849 = 112498^2 + 90043^2 .

It is a cyclic number.

It is not a de Polignac number, because 20763541853 - 2⁴ = 20763541837 is a prime.

It is a super-2 number, since 2×20763541853² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20763541823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381770926 + 10381770927.

It is an arithmetic number, because the mean of its divisors is an integer number (10381770927).

Almost surely, 2^20763541853 is an apocalyptic number.

It is an amenable number.

20763541853 is a deficient number, since it is larger than the sum of its proper divisors (1).

20763541853 is an equidigital number, since it uses as much as digits as its factorization.

20763541853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 604800, while the sum is 44.

The spelling of 20763541853 in words is "twenty billion, seven hundred sixty-three million, five hundred forty-one thousand, eight hundred fifty-three".