20655826317 has 48 divisors (see below), whose sum is σ = 35297907840. Its totient is φ = 11388698496.

The previous prime is 20655826297. The next prime is 20655826337. The reversal of 20655826317 is 71362855602.

20655826317 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 5 + 8 + 2 + 631 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (20655826297) and next prime (20655826337).

It is not a de Polignac number, because 20655826317 - 2¹¹ = 20655824269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20655826337) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3748078 + ... + 3753584.

It is an arithmetic number, because the mean of its divisors is an integer number (735373080).

Almost surely, 2^20655826317 is an apocalyptic number.

It is an amenable number.

20655826317 is a deficient number, since it is larger than the sum of its proper divisors (14642081523).

20655826317 is a wasteful number, since it uses less digits than its factorization.

20655826317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7602 (or 7599 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 20655826317 in words is "twenty billion, six hundred fifty-five million, eight hundred twenty-six thousand, three hundred seventeen".