20788717303472 has 80 divisors (see below), whose sum is σ = 42071471205888. Its totient is φ = 9932474534400.

The previous prime is 20788717303423. The next prime is 20788717303477. The reversal of 20788717303472 is 27430371788702.

It is a happy number.

It is a super-2 number, since 2×20788717303472² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20788717303477) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1870660988 + ... + 1870672100.

Almost surely, 2^{20788717303472} is an apocalyptic number.

It is an amenable number.

20788717303472 is an abundant number, since it is smaller than the sum of its proper divisors (21282753902416).

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

20788717303472 is a wasteful number, since it uses less digits than its factorization.

20788717303472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15778 (or 15772 counting only the distinct ones).

The product of its (nonzero) digits is 22127616, while the sum is 59.

The spelling of 20788717303472 in words is "twenty trillion, seven hundred eighty-eight billion, seven hundred seventeen million, three hundred three thousand, four hundred seventy-two".