20603630520 has 192 divisors, whose sum is σ = 73188217440. Its totient is φ = 4985318400.

The previous prime is 20603630519. The next prime is 20603630527. The reversal of 20603630520 is 2503630602.

20603630520 is a `hidden beast` number, since 2 + 0 + 6 + 0 + 3 + 630 + 5 + 20 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603630527) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2201050 + ... + 2210390.

Almost surely, 2^20603630520 is an apocalyptic number.

20603630520 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 20603630520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36594108720).

20603630520 is an abundant number, since it is smaller than the sum of its proper divisors (52584586920).

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

20603630520 is a wasteful number, since it uses less digits than its factorization.

20603630520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9926 (or 9919 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The spelling of 20603630520 in words is "twenty billion, six hundred three million, six hundred thirty thousand, five hundred twenty".