20555073771792 has 320 divisors, whose sum is σ = 64424767979520. Its totient is φ = 5512932605952.

The previous prime is 20555073771689. The next prime is 20555073771797. The reversal of 20555073771792 is 29717737055502.

It is a super-2 number, since 2×20555073771792² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20555073771797) 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 63 ways as a sum of consecutive naturals, for example, 5404960963 + ... + 5404964765.

It is an arithmetic number, because the mean of its divisors is an integer number (201327399936).

Almost surely, 2^{20555073771792} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20555073771792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32212383989760).

20555073771792 is an abundant number, since it is smaller than the sum of its proper divisors (43869694207728).

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

20555073771792 is a wasteful number, since it uses less digits than its factorization.

20555073771792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070 (or 6064 counting only the distinct ones).

The product of its (nonzero) digits is 32413500, while the sum is 60.

The spelling of 20555073771792 in words is "twenty trillion, five hundred fifty-five billion, seventy-three million, seven hundred seventy-one thousand, seven hundred ninety-two".