20603842560 has 416 divisors, whose sum is σ = 83729057280. Its totient is φ = 4708564992.

The previous prime is 20603842489. The next prime is 20603842577. The reversal of 20603842560 is 6524830602.

20603842560 is a `hidden beast` number, since 2 + 0 + 60 + 38 + 4 + 2 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 31 ways as a sum of consecutive naturals, for example, 3868059 + ... + 3873381.

Almost surely, 2^20603842560 is an apocalyptic number.

20603842560 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 20603842560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41864528640).

20603842560 is an abundant number, since it is smaller than the sum of its proper divisors (63125214720).

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

20603842560 is an equidigital number, since it uses as much as digits as its factorization.

20603842560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368 (or 5340 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 20603842560 in words is "twenty billion, six hundred three million, eight hundred forty-two thousand, five hundred sixty".