20100244277 has 2 divisors, whose sum is σ = 20100244278. Its totient is φ = 20100244276.

The previous prime is 20100244217. The next prime is 20100244279. The reversal of 20100244277 is 77244200102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17815308676 + 2284935601 = 133474^2 + 47801^2 .

It is a cyclic number.

It is not a de Polignac number, because 20100244277 - 2¹⁰ = 20100243253 is a prime.

Together with 20100244279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100244279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050122138 + 10050122139.

It is an arithmetic number, because the mean of its divisors is an integer number (10050122139).

Almost surely, 2^20100244277 is an apocalyptic number.

It is an amenable number.

20100244277 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100244277 is an equidigital number, since it uses as much as digits as its factorization.

20100244277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 29.

Adding to 20100244277 its reverse (77244200102), we get a palindrome (97344444379).

The spelling of 20100244277 in words is "twenty billion, one hundred million, two hundred forty-four thousand, two hundred seventy-seven".