20500424534 has 16 divisors (see below), whose sum is σ = 30929895360. Its totient is φ = 10190494080.

The previous prime is 20500424459. The next prime is 20500424563. The reversal of 20500424534 is 43542400502.

It is a junction number, because it is equal to n+sod(n) for n = 20500424497 and 20500424506.

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, 1609262 + ... + 1621950.

It is an arithmetic number, because the mean of its divisors is an integer number (1933118460).

Almost surely, 2^20500424534 is an apocalyptic number.

20500424534 is a deficient number, since it is larger than the sum of its proper divisors (10429470826).

20500424534 is a wasteful number, since it uses less digits than its factorization.

20500424534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17335.

The product of its (nonzero) digits is 19200, while the sum is 29.

The spelling of 20500424534 in words is "twenty billion, five hundred million, four hundred twenty-four thousand, five hundred thirty-four".