20244406109 has 2 divisors, whose sum is σ = 20244406110. Its totient is φ = 20244406108.

The previous prime is 20244406073. The next prime is 20244406141. The reversal of 20244406109 is 90160444202.

It is an a-pointer prime, because the next prime (20244406141) can be obtained adding 20244406109 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13747562500 + 6496843609 = 117250^2 + 80603^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20244406109 is a prime.

It is a super-2 number, since 2×20244406109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20244400109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10122203054 + 10122203055.

It is an arithmetic number, because the mean of its divisors is an integer number (10122203055).

Almost surely, 2^20244406109 is an apocalyptic number.

It is an amenable number.

20244406109 is a deficient number, since it is larger than the sum of its proper divisors (1).

20244406109 is an equidigital number, since it uses as much as digits as its factorization.

20244406109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 20244406109 in words is "twenty billion, two hundred forty-four million, four hundred six thousand, one hundred nine".