20912057712 has 600 divisors, whose sum is σ = 77083410096. Its totient is φ = 5424039936.

The previous prime is 20912057711. The next prime is 20912057729. The reversal of 20912057712 is 21775021902.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20912057711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 60265123 + ... + 60265469.

Almost surely, 2^20912057712 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 20912057712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38541705048).

20912057712 is an abundant number, since it is smaller than the sum of its proper divisors (56171352384).

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

20912057712 is a wasteful number, since it uses less digits than its factorization.

20912057712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 36.

The spelling of 20912057712 in words is "twenty billion, nine hundred twelve million, fifty-seven thousand, seven hundred twelve".