20286868286 has 32 divisors (see below), whose sum is σ = 31550238720. Its totient is φ = 9773128800.

The previous prime is 20286868253. The next prime is 20286868291. The reversal of 20286868286 is 68286868202.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 25453640 + ... + 25454436.

It is an arithmetic number, because the mean of its divisors is an integer number (985944960).

Almost surely, 2^20286868286 is an apocalyptic number.

20286868286 is a deficient number, since it is larger than the sum of its proper divisors (11263370434).

20286868286 is a wasteful number, since it uses less digits than its factorization.

20286868286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 7077888, while the sum is 56.

The spelling of 20286868286 in words is "twenty billion, two hundred eighty-six million, eight hundred sixty-eight thousand, two hundred eighty-six".