20385108536 has 48 divisors (see below), whose sum is σ = 41410521000. Its totient is φ = 9403485312.

The previous prime is 20385108521. The next prime is 20385108559. The reversal of 20385108536 is 63580158302.

It is a junction number, because it is equal to n+sod(n) for n = 20385108493 and 20385108502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3995315 + ... + 4000413.

Almost surely, 2^20385108536 is an apocalyptic number.

20385108536 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20385108536 is an abundant number, since it is smaller than the sum of its proper divisors (21025412464).

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

20385108536 is a wasteful number, since it uses less digits than its factorization.

20385108536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8088 (or 8071 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 20385108536 in words is "twenty billion, three hundred eighty-five million, one hundred eight thousand, five hundred thirty-six".