20530530524 has 24 divisors (see below), whose sum is σ = 41130337248. Its totient is φ = 8783953920.

The previous prime is 20530530509. The next prime is 20530530533. The reversal of 20530530524 is 42503503502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601637 + ... + 634844.

It is an arithmetic number, because the mean of its divisors is an integer number (1713764052).

Almost surely, 2^20530530524 is an apocalyptic number.

It is an amenable number.

20530530524 is an abundant number, since it is smaller than the sum of its proper divisors (20599806724).

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

20530530524 is a wasteful number, since it uses less digits than its factorization.

20530530524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237085 (or 1237083 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 29.

The spelling of 20530530524 in words is "twenty billion, five hundred thirty million, five hundred thirty thousand, five hundred twenty-four".