20286824085 has 64 divisors (see below), whose sum is σ = 40181391360. Its totient is φ = 9626725440.

The previous prime is 20286824069. The next prime is 20286824093. The reversal of 20286824085 is 58042868202.

It is not a de Polignac number, because 20286824085 - 2⁴ = 20286824069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20286824085.

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 63 ways as a sum of consecutive naturals, for example, 75537 + ... + 215126.

It is an arithmetic number, because the mean of its divisors is an integer number (627834240).

Almost surely, 2^20286824085 is an apocalyptic number.

It is an amenable number.

20286824085 is a deficient number, since it is larger than the sum of its proper divisors (19894567275).

20286824085 is a wasteful number, since it uses less digits than its factorization.

20286824085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290735 (or 290729 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 20286824085 in words is "twenty billion, two hundred eighty-six million, eight hundred twenty-four thousand, eighty-five".