20929119560 has 256 divisors, whose sum is σ = 54428889600. Its totient is φ = 7196884992.

The previous prime is 20929119553. The next prime is 20929119587. The reversal of 20929119560 is 6591192902.

It is a Cunningham number, because it is equal to 144669²-1.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34141814 + ... + 34142426.

It is an arithmetic number, because the mean of its divisors is an integer number (212612850).

Almost surely, 2^20929119560 is an apocalyptic number.

20929119560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20929119560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27214444800).

20929119560 is an abundant number, since it is smaller than the sum of its proper divisors (33499770040).

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

20929119560 is a wasteful number, since it uses less digits than its factorization.

20929119560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 20929119560 in words is "twenty billion, nine hundred twenty-nine million, one hundred nineteen thousand, five hundred sixty".