20036526109 has 2 divisors, whose sum is σ = 20036526110. Its totient is φ = 20036526108.

The previous prime is 20036526091. The next prime is 20036526157. The reversal of 20036526109 is 90162563002.

Together with previous prime (20036526091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19769203609 + 267322500 = 140603^2 + 16350^2 .

It is a cyclic number.

It is not a de Polignac number, because 20036526109 - 2¹¹ = 20036524061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20036526709) 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, 10018263054 + 10018263055.

It is an arithmetic number, because the mean of its divisors is an integer number (10018263055).

Almost surely, 2^20036526109 is an apocalyptic number.

It is an amenable number.

20036526109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20036526109 is an equidigital number, since it uses as much as digits as its factorization.

20036526109 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 20036526109 in words is "twenty billion, thirty-six million, five hundred twenty-six thousand, one hundred nine".