20286109512 has 48 divisors (see below), whose sum is σ = 54948479040. Its totient is φ = 6761183328.

The previous prime is 20286109477. The next prime is 20286109517. The reversal of 20286109512 is 21590168202.

20286109512 is a `hidden beast` number, since 2 + 0 + 28 + 610 + 9 + 5 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (20286109517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 846933 + ... + 870555.

It is an arithmetic number, because the mean of its divisors is an integer number (1144759980).

Almost surely, 2^20286109512 is an apocalyptic number.

It is an amenable number.

20286109512 is an abundant number, since it is smaller than the sum of its proper divisors (34662369528).

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

20286109512 is a wasteful number, since it uses less digits than its factorization.

20286109512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35562 (or 35555 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The spelling of 20286109512 in words is "twenty billion, two hundred eighty-six million, one hundred nine thousand, five hundred twelve".