20718773963712 has 224 divisors, whose sum is σ = 67535864928000. Its totient is φ = 6175491148800.

The previous prime is 20718773963711. The next prime is 20718773963743. The reversal of 20718773963712 is 21736937781702.

20718773963712 is a `hidden beast` number, since 20 + 7 + 187 + 7 + 396 + 37 + 12 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 20718773963712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20718773963711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7774962 + ... + 10093937.

It is an arithmetic number, because the mean of its divisors is an integer number (301499397000).

Almost surely, 2^{20718773963712} is an apocalyptic number.

20718773963712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20718773963712 is an abundant number, since it is smaller than the sum of its proper divisors (46817090964288).

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

20718773963712 is a wasteful number, since it uses less digits than its factorization.

20718773963712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17868992 (or 17868976 counting only the distinct ones).

The product of its (nonzero) digits is 37340352, while the sum is 63.

The spelling of 20718773963712 in words is "twenty trillion, seven hundred eighteen billion, seven hundred seventy-three million, nine hundred sixty-three thousand, seven hundred twelve".