20020716660 has 192 divisors, whose sum is σ = 66450585600. Its totient is φ = 4406696448.

The previous prime is 20020716659. The next prime is 20020716707. The reversal of 20020716660 is 6661702002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 5101459 + ... + 5105381.

It is an arithmetic number, because the mean of its divisors is an integer number (346096800).

Almost surely, 2^20020716660 is an apocalyptic number.

20020716660 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 20020716660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33225292800).

20020716660 is an abundant number, since it is smaller than the sum of its proper divisors (46429868940).

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

20020716660 is a wasteful number, since it uses less digits than its factorization.

20020716660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390 (or 4388 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The spelling of 20020716660 in words is "twenty billion, twenty million, seven hundred sixteen thousand, six hundred sixty".