20286001091 has 4 divisors (see below), whose sum is σ = 20985518400. Its totient is φ = 19586483784.

The previous prime is 20286001079. The next prime is 20286001103. The reversal of 20286001091 is 19010068202.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20286001079) and next prime (20286001103).

It is a cyclic number.

It is not a de Polignac number, because 20286001091 - 2¹⁰ = 20286000067 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 699517279 = 20286001091 / (2 + 0 + 2 + 8 + 6 + 0 + 0 + 1 + 0 + 9 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20286001391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349758611 + ... + 349758668.

It is an arithmetic number, because the mean of its divisors is an integer number (5246379600).

Almost surely, 2^20286001091 is an apocalyptic number.

20286001091 is a deficient number, since it is larger than the sum of its proper divisors (699517309).

20286001091 is an equidigital number, since it uses as much as digits as its factorization.

20286001091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699517308.

The product of its (nonzero) digits is 1728, while the sum is 29.

Adding to 20286001091 its reverse (19010068202), we get a palindrome (39296069293).

The spelling of 20286001091 in words is "twenty billion, two hundred eighty-six million, one thousand, ninety-one".