21927264530113 has 2 divisors, whose sum is σ = 21927264530114. Its totient is φ = 21927264530112.

The previous prime is 21927264530099. The next prime is 21927264530141. The reversal of 21927264530113 is 31103546272912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14804733726864 + 7122530803249 = 3847692^2 + 2668807^2 .

It is a cyclic number.

It is not a de Polignac number, because 21927264530113 - 2²¹ = 21927262432961 is a prime.

It is not a weakly prime, because it can be changed into another prime (21927264530713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10963632265056 + 10963632265057.

It is an arithmetic number, because the mean of its divisors is an integer number (10963632265057).

Almost surely, 2^{21927264530113} is an apocalyptic number.

It is an amenable number.

21927264530113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21927264530113 is an equidigital number, since it uses as much as digits as its factorization.

21927264530113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 46.

The spelling of 21927264530113 in words is "twenty-one trillion, nine hundred twenty-seven billion, two hundred sixty-four million, five hundred thirty thousand, one hundred thirteen".