20716029558 has 128 divisors (see below), whose sum is σ = 57504522240. Its totient is φ = 5390945280.

The previous prime is 20716029539. The next prime is 20716029559. The reversal of 20716029558 is 85592061702.

20716029558 is a `hidden beast` number, since 2 + 0 + 71 + 6 + 0 + 29 + 558 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20716029559) by changing a digit.

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, 147210 + ... + 251202.

It is an arithmetic number, because the mean of its divisors is an integer number (449254080).

Almost surely, 2^20716029558 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20716029558, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28752261120).

20716029558 is an abundant number, since it is smaller than the sum of its proper divisors (36788492682).

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

20716029558 is a wasteful number, since it uses less digits than its factorization.

20716029558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104059 (or 104053 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The spelling of 20716029558 in words is "twenty billion, seven hundred sixteen million, twenty-nine thousand, five hundred fifty-eight".