20705236227 has 128 divisors (see below), whose sum is σ = 35300966400. Its totient is φ = 11902851072.

The previous prime is 20705236199. The next prime is 20705236247. The reversal of 20705236227 is 72263250702.

20705236227 is a `hidden beast` number, since 2 + 0 + 7 + 0 + 5 + 23 + 622 + 7 = 666.

It is not a de Polignac number, because 20705236227 - 2¹⁶ = 20705170691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20705236191 and 20705236200.

It is not an unprimeable number, because it can be changed into a prime (20705236247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 54060478 + ... + 54060860.

It is an arithmetic number, because the mean of its divisors is an integer number (275788800).

Almost surely, 2^20705236227 is an apocalyptic number.

20705236227 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20705236227 is a deficient number, since it is larger than the sum of its proper divisors (14595730173).

20705236227 is a wasteful number, since it uses less digits than its factorization.

20705236227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

Adding to 20705236227 its reverse (72263250702), we get a palindrome (92968486929).

The spelling of 20705236227 in words is "twenty billion, seven hundred five million, two hundred thirty-six thousand, two hundred twenty-seven".