20717032326056 has 32 divisors (see below), whose sum is σ = 44606050466400. Its totient is φ = 8921210091840.

The previous prime is 20717032326019. The next prime is 20717032326059. The reversal of 20717032326056 is 65062323071702.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 20717032325998 and 20717032326016.

It is not an unprimeable number, because it can be changed into a prime (20717032326059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6195283115 + ... + 6195286458.

It is an arithmetic number, because the mean of its divisors is an integer number (1393939077075).

Almost surely, 2^{20717032326056} is an apocalyptic number.

It is an amenable number.

20717032326056 is an abundant number, since it is smaller than the sum of its proper divisors (23889018140344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20717032326056 is a wasteful number, since it uses less digits than its factorization.

20717032326056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12390569609 (or 12390569605 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

Adding to 20717032326056 its reverse (65062323071702), we get a palindrome (85779355397758).

The spelling of 20717032326056 in words is "twenty trillion, seven hundred seventeen billion, thirty-two million, three hundred twenty-six thousand, fifty-six".