20595732869 has 2 divisors, whose sum is σ = 20595732870. Its totient is φ = 20595732868.

The previous prime is 20595732853. The next prime is 20595732887. The reversal of 20595732869 is 96823759502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14556422500 + 6039310369 = 120650^2 + 77713^2 .

It is a cyclic number.

It is not a de Polignac number, because 20595732869 - 2⁴ = 20595732853 is a prime.

It is a super-2 number, since 2×20595732869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20595732809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10297866434 + 10297866435.

It is an arithmetic number, because the mean of its divisors is an integer number (10297866435).

Almost surely, 2^20595732869 is an apocalyptic number.

It is an amenable number.

20595732869 is a deficient number, since it is larger than the sum of its proper divisors (1).

20595732869 is an equidigital number, since it uses as much as digits as its factorization.

20595732869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 20595732869 in words is "twenty billion, five hundred ninety-five million, seven hundred thirty-two thousand, eight hundred sixty-nine".