20579980992 has 112 divisors (see below), whose sum is σ = 55846382592. Its totient is φ = 6685470720.

The previous prime is 20579980951. The next prime is 20579981017. The reversal of 20579980992 is 29908997502.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2170053 + ... + 2179515.

It is an arithmetic number, because the mean of its divisors is an integer number (498628416).

Almost surely, 2^20579980992 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 20579980992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27923191296).

20579980992 is an abundant number, since it is smaller than the sum of its proper divisors (35266401600).

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

20579980992 is a wasteful number, since it uses less digits than its factorization.

20579980992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9766 (or 9756 counting only the distinct ones).

The product of its (nonzero) digits is 7348320, while the sum is 60.

The spelling of 20579980992 in words is "twenty billion, five hundred seventy-nine million, nine hundred eighty thousand, nine hundred ninety-two".