20773888893792 has 72 divisors (see below), whose sum is σ = 59076415321560. Its totient is φ = 6924551239680.

The previous prime is 20773888893767. The next prime is 20773888893853. The reversal of 20773888893792 is 29739888837702.

20773888893792 is a `hidden beast` number, since 2 + 0 + 7 + 7 + 388 + 88 + 93 + 79 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×20773888893792² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28663567 + ... + 29379377.

It is an arithmetic number, because the mean of its divisors is an integer number (820505768355).

Almost surely, 2^{20773888893792} is an apocalyptic number.

It is an amenable number.

20773888893792 is an abundant number, since it is smaller than the sum of its proper divisors (38302526427768).

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

20773888893792 is a wasteful number, since it uses less digits than its factorization.

20773888893792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816596 (or 816585 counting only the distinct ones).

The product of its (nonzero) digits is 4096770048, while the sum is 81.

The spelling of 20773888893792 in words is "twenty trillion, seven hundred seventy-three billion, eight hundred eighty-eight million, eight hundred ninety-three thousand, seven hundred ninety-two".