20597735233 has 2 divisors, whose sum is σ = 20597735234. Its totient is φ = 20597735232.

The previous prime is 20597735231. The next prime is 20597735243. The reversal of 20597735233 is 33253779502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12510869904 + 8086865329 = 111852^2 + 89927^2 .

It is a cyclic number.

It is not a de Polignac number, because 20597735233 - 2¹ = 20597735231 is a prime.

Together with 20597735231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20597735231) 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, 10298867616 + 10298867617.

It is an arithmetic number, because the mean of its divisors is an integer number (10298867617).

Almost surely, 2^20597735233 is an apocalyptic number.

It is an amenable number.

20597735233 is a deficient number, since it is larger than the sum of its proper divisors (1).

20597735233 is an equidigital number, since it uses as much as digits as its factorization.

20597735233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1190700, while the sum is 46.

The spelling of 20597735233 in words is "twenty billion, five hundred ninety-seven million, seven hundred thirty-five thousand, two hundred thirty-three".