20555407712 has 24 divisors (see below), whose sum is σ = 46249667856. Its totient is φ = 8809460352.

The previous prime is 20555407703. The next prime is 20555407751. The reversal of 20555407712 is 21770455502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45882383 + ... + 45882830.

It is an arithmetic number, because the mean of its divisors is an integer number (1927069494).

Almost surely, 2^20555407712 is an apocalyptic number.

It is an amenable number.

20555407712 is an abundant number, since it is smaller than the sum of its proper divisors (25694260144).

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

20555407712 is an equidigital number, since it uses as much as digits as its factorization.

20555407712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91765230 (or 91765222 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 38.

The spelling of 20555407712 in words is "twenty billion, five hundred fifty-five million, four hundred seven thousand, seven hundred twelve".