20536421383 has 2 divisors, whose sum is σ = 20536421384. Its totient is φ = 20536421382.

The previous prime is 20536421371. The next prime is 20536421513. The reversal of 20536421383 is 38312463502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20536421383 - 2⁹ = 20536420871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20636421383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10268210691 + 10268210692.

It is an arithmetic number, because the mean of its divisors is an integer number (10268210692).

Almost surely, 2^20536421383 is an apocalyptic number.

20536421383 is a deficient number, since it is larger than the sum of its proper divisors (1).

20536421383 is an equidigital number, since it uses as much as digits as its factorization.

20536421383 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 20536421383 its reverse (38312463502), we get a palindrome (58848884885).

The spelling of 20536421383 in words is "twenty billion, five hundred thirty-six million, four hundred twenty-one thousand, three hundred eighty-three".