20603624056 has 32 divisors (see below), whose sum is σ = 39738394080. Its totient is φ = 10008806400.

The previous prime is 20603624039. The next prime is 20603624057. The reversal of 20603624056 is 65042630602.

It is a super-2 number, since 2×20603624056² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603624057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51276 + ... + 209371.

It is an arithmetic number, because the mean of its divisors is an integer number (1241824815).

Almost surely, 2^20603624056 is an apocalyptic number.

It is an amenable number.

20603624056 is a deficient number, since it is larger than the sum of its proper divisors (19134770024).

20603624056 is a wasteful number, since it uses less digits than its factorization.

20603624056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260935 (or 260931 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The spelling of 20603624056 in words is "twenty billion, six hundred three million, six hundred twenty-four thousand, fifty-six".