20609768055 has 8 divisors (see below), whose sum is σ = 32975628912. Its totient is φ = 10991876288.

The previous prime is 20609767993. The next prime is 20609768131. The reversal of 20609768055 is 55086790602.

It is a happy number.

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 20609768055 - 2¹² = 20609763959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20609767995 and 20609768013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686992254 + ... + 686992283.

It is an arithmetic number, because the mean of its divisors is an integer number (4121953614).

Almost surely, 2^20609768055 is an apocalyptic number.

20609768055 is a deficient number, since it is larger than the sum of its proper divisors (12365860857).

20609768055 is a wasteful number, since it uses less digits than its factorization.

20609768055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373984545.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 20609768055 in words is "twenty billion, six hundred nine million, seven hundred sixty-eight thousand, fifty-five".