20286751836 has 48 divisors (see below), whose sum is σ = 50993712000. Its totient is φ = 6240027072.

The previous prime is 20286751817. The next prime is 20286751909. The reversal of 20286751836 is 63815768202.

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, 494935 + ... + 534353.

It is an arithmetic number, because the mean of its divisors is an integer number (1062369000).

Almost surely, 2^20286751836 is an apocalyptic number.

20286751836 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20286751836 is an abundant number, since it is smaller than the sum of its proper divisors (30706960164).

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

20286751836 is a wasteful number, since it uses less digits than its factorization.

20286751836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42738 (or 42736 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 20286751836 in words is "twenty billion, two hundred eighty-six million, seven hundred fifty-one thousand, eight hundred thirty-six".