20111344193 has 2 divisors, whose sum is σ = 20111344194. Its totient is φ = 20111344192.

The previous prime is 20111344189. The next prime is 20111344223. The reversal of 20111344193 is 39144311102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18924679489 + 1186664704 = 137567^2 + 34448^2 .

It is a cyclic number.

It is not a de Polignac number, because 20111344193 - 2² = 20111344189 is a prime.

It is not a weakly prime, because it can be changed into another prime (20111344103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055672096 + 10055672097.

It is an arithmetic number, because the mean of its divisors is an integer number (10055672097).

Almost surely, 2^20111344193 is an apocalyptic number.

It is an amenable number.

20111344193 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111344193 is an equidigital number, since it uses as much as digits as its factorization.

20111344193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 20111344193 its reverse (39144311102), we get a palindrome (59255655295).

The spelling of 20111344193 in words is "twenty billion, one hundred eleven million, three hundred forty-four thousand, one hundred ninety-three".