20926660608 has 512 divisors, whose sum is σ = 73818624000. Its totient is φ = 5733089280.

The previous prime is 20926660519. The next prime is 20926660627. The reversal of 20926660608 is 80606662902.

It is a tau number, because it is divible by the number of its divisors (512).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 191987658 + ... + 191987766.

It is an arithmetic number, because the mean of its divisors is an integer number (144177000).

Almost surely, 2^20926660608 is an apocalyptic number.

20926660608 is a gapful number since it is divisible by the number (28) 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 20926660608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36909312000).

20926660608 is an abundant number, since it is smaller than the sum of its proper divisors (52891963392).

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

20926660608 is an equidigital number, since it uses as much as digits as its factorization.

20926660608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 20926660608 in words is "twenty billion, nine hundred twenty-six million, six hundred sixty thousand, six hundred eight".