20536882397 has 2 divisors, whose sum is σ = 20536882398. Its totient is φ = 20536882396.

The previous prime is 20536882363. The next prime is 20536882409. The reversal of 20536882397 is 79328863502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14597714041 + 5939168356 = 120821^2 + 77066^2 .

It is a cyclic number.

It is not a de Polignac number, because 20536882397 - 2¹² = 20536878301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20536882337) 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, 10268441198 + 10268441199.

It is an arithmetic number, because the mean of its divisors is an integer number (10268441199).

Almost surely, 2^20536882397 is an apocalyptic number.

It is an amenable number.

20536882397 is a deficient number, since it is larger than the sum of its proper divisors (1).

20536882397 is an equidigital number, since it uses as much as digits as its factorization.

20536882397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 53.

The spelling of 20536882397 in words is "twenty billion, five hundred thirty-six million, eight hundred eighty-two thousand, three hundred ninety-seven".