20596985069 has 8 divisors (see below), whose sum is σ = 21845359800. Its totient is φ = 19352697856.

The previous prime is 20596985033. The next prime is 20596985077. The reversal of 20596985069 is 96058969502.

It can be written as a sum of positive squares in 4 ways, for example, as 9218496169 + 11378488900 = 96013^2 + 106670^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20596985069 - 2⁸ = 20596984813 is a prime.

It is a super-2 number, since 2×20596985069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20596984999 and 20596985017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20596985099) 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 in 7 ways as a sum of consecutive naturals, for example, 1011494 + ... + 1031655.

It is an arithmetic number, because the mean of its divisors is an integer number (2730669975).

Almost surely, 2^20596985069 is an apocalyptic number.

It is an amenable number.

20596985069 is a deficient number, since it is larger than the sum of its proper divisors (1248374731).

20596985069 is a wasteful number, since it uses less digits than its factorization.

20596985069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043759.

The product of its (nonzero) digits is 10497600, while the sum is 59.

The spelling of 20596985069 in words is "twenty billion, five hundred ninety-six million, nine hundred eighty-five thousand, sixty-nine".