20603224518 has 16 divisors (see below), whose sum is σ = 41606512896. Its totient is φ = 6801064200.

The previous prime is 20603224517. The next prime is 20603224547. The reversal of 20603224518 is 81542230602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20603224517) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16668658 + ... + 16669893.

It is an arithmetic number, because the mean of its divisors is an integer number (2600407056).

Almost surely, 2^20603224518 is an apocalyptic number.

20603224518 is an abundant number, since it is smaller than the sum of its proper divisors (21003288378).

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

20603224518 is a wasteful number, since it uses less digits than its factorization.

20603224518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33338659.

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 20603224518 in words is "twenty billion, six hundred three million, two hundred twenty-four thousand, five hundred eighteen".