20211632593 has 2 divisors, whose sum is σ = 20211632594. Its totient is φ = 20211632592.

The previous prime is 20211632591. The next prime is 20211632599. The reversal of 20211632593 is 39523611202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19479226624 + 732405969 = 139568^2 + 27063^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211632593 - 2¹ = 20211632591 is a prime.

Together with 20211632591, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20211632591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105816296 + 10105816297.

It is an arithmetic number, because the mean of its divisors is an integer number (10105816297).

Almost surely, 2^20211632593 is an apocalyptic number.

It is an amenable number.

20211632593 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211632593 is an equidigital number, since it uses as much as digits as its factorization.

20211632593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 34.

The spelling of 20211632593 in words is "twenty billion, two hundred eleven million, six hundred thirty-two thousand, five hundred ninety-three".