20513362019933 has 2 divisors, whose sum is σ = 20513362019934. Its totient is φ = 20513362019932.

The previous prime is 20513362019893. The next prime is 20513362020059. The reversal of 20513362019933 is 33991026331502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13042116063769 + 7471245956164 = 3611387^2 + 2733358^2 .

It is a cyclic number.

It is not a de Polignac number, because 20513362019933 - 2¹⁰ = 20513362018909 is a prime.

It is a super-4 number, since 4×20513362019933⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20513362019833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10256681009966 + 10256681009967.

It is an arithmetic number, because the mean of its divisors is an integer number (10256681009967).

Almost surely, 2^{20513362019933} is an apocalyptic number.

It is an amenable number.

20513362019933 is a deficient number, since it is larger than the sum of its proper divisors (1).

20513362019933 is an equidigital number, since it uses as much as digits as its factorization.

20513362019933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 787320, while the sum is 47.

The spelling of 20513362019933 in words is "twenty trillion, five hundred thirteen billion, three hundred sixty-two million, nineteen thousand, nine hundred thirty-three".