20340809112 has 64 divisors (see below), whose sum is σ = 55181871360. Its totient is φ = 6210921600.

The previous prime is 20340809051. The next prime is 20340809147. The reversal of 20340809112 is 21190804302.

It is a self number, because there is not a number n which added to its sum of digits gives 20340809112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207964 + ... + 289707.

It is an arithmetic number, because the mean of its divisors is an integer number (862216740).

Almost surely, 2^20340809112 is an apocalyptic number.

It is an amenable number.

20340809112 is an abundant number, since it is smaller than the sum of its proper divisors (34841062248).

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

20340809112 is a wasteful number, since it uses less digits than its factorization.

20340809112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497824 (or 497820 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The spelling of 20340809112 in words is "twenty billion, three hundred forty million, eight hundred nine thousand, one hundred twelve".