20929588992 has 216 divisors, whose sum is σ = 67086434688. Its totient is φ = 6231859200.

The previous prime is 20929588973. The next prime is 20929588993. The reversal of 20929588992 is 29988592902.

20929588992 is a `hidden beast` number, since 20 + 9 + 29 + 588 + 9 + 9 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20929588993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 917242 + ... + 939782.

Almost surely, 2^20929588992 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 20929588992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33543217344).

20929588992 is an abundant number, since it is smaller than the sum of its proper divisors (46156845696).

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

20929588992 is a wasteful number, since it uses less digits than its factorization.

20929588992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22607 (or 22590 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 63.

The spelling of 20929588992 in words is "twenty billion, nine hundred twenty-nine million, five hundred eighty-eight thousand, nine hundred ninety-two".