20653839360 has 528 divisors, whose sum is σ = 89239243392. Its totient is φ = 4290969600.

The previous prime is 20653839341. The next prime is 20653839389. The reversal of 20653839360 is 6393835602.

20653839360 is a `hidden beast` number, since 20 + 6 + 538 + 3 + 93 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (528).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3545250 + ... + 3551070.

Almost surely, 2^20653839360 is an apocalyptic number.

20653839360 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 20653839360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44619621696).

20653839360 is an abundant number, since it is smaller than the sum of its proper divisors (68585404032).

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

20653839360 is a wasteful number, since it uses less digits than its factorization.

20653839360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 45.

The spelling of 20653839360 in words is "twenty billion, six hundred fifty-three million, eight hundred thirty-nine thousand, three hundred sixty".