20110958869 has 2 divisors, whose sum is σ = 20110958870. Its totient is φ = 20110958868.

The previous prime is 20110958867. The next prime is 20110958893. The reversal of 20110958869 is 96885901102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20089660644 + 21298225 = 141738^2 + 4615^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110958869 - 2¹ = 20110958867 is a prime.

It is a super-2 number, since 2×20110958869² (a number of 21 digits) contains 22 as substring.

Together with 20110958867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110958863) by changing a digit.

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 as a sum of consecutive naturals, namely, 10055479434 + 10055479435.

It is an arithmetic number, because the mean of its divisors is an integer number (10055479435).

Almost surely, 2^20110958869 is an apocalyptic number.

It is an amenable number.

20110958869 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110958869 is an equidigital number, since it uses as much as digits as its factorization.

20110958869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 49.

The spelling of 20110958869 in words is "twenty billion, one hundred ten million, nine hundred fifty-eight thousand, eight hundred sixty-nine".